We took a look at your model in the latest build of CivilStorm (08.11.05.58) with the latest cumulative patch applied. Below is the data at a junction upstream fro the O-1 outfall. As you can see the hydraulic grade increases between each scenario. This is a graph of the outfall O-1 in the different scenarios. This is a slight difference between each scenario. Is this what you are seeing? These values appear to be correct considering the flow and the size of the pipes.
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Forum Post: RE: HGL lower for larger rainfall event in CivilStorm
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Forum Post: Storage Needed Downstream of VFD
Rule of Thumb Question - In general terms, what is a rule of thumb in regards to bladder tanks or some hydropnuematic tank downstream of a VFD in terms of volume needed.
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Forum Post: RE: PONDPACK ICPM TW and HW increment
Mark, the first step from the instruction took me to different site than what is shown on second step. rather than software fullfillment, it took me to Bently Iware and Bently Apps site, am I doing something wrong?
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Forum Post: RE: PONDPACK ICPM TW and HW increment
Adane, No, you're not doing anything wrong it looks like you may have overlooked the note above the first step that explains that only your site administrators, who are usually part of the IT department, have the rights to download the software from our website. You're being redirected to the page about Iware and Apps because you do not have the necessary rights to download the software from our website. Having a site administrator helps companies that like to keep a tight watch on who can download and install application the control they need to help prevent against viruses or malware infecting computers and causing possible damage to confidential or intellectual property. I tried to look up who the person is that you need to contact based on your office location and I don't see that we have anything on record for the Oregon location. Regards, Mark
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Forum Post: RE: PONDPACK ICPM TW and HW increment
Mark, thanks. I am in Arlington, VA office and I contacted the IT department who manage our Bently products and let them know the situation and most likely they can update the software. thanks again
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Wiki Page: Can the Hydraulics and Hydrology products integrate with Power platform products (Power GEOPAK, Power InRoads)?
Applies To Product(s): Bentley SewerCAD, Bentley SewerGEMS, Bentley PondPack, Bentley CivilStorm, Bentley StormCAD Version(s): 08.11.XX.XX Environment: N\A Area: Other Subarea: N\A Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description Can the Hydraulics and Hydrology products run inside with Power GEOPAK or Power InRoads, so they can be used within the platform like they can with Microstation? Solution Yes, the hydraulics and hydrology products can run inside Power GEOPAK and Power InRoads on an identical Microstation platform. While the Microstation integration will not be automatically installed you can use these directions that explain how to load the hydraulics and hydrology products within a customized Microstation workspace. Alternatively, the following steps can be used. These steps assume the user has Power GEOPAK and StormCAD installed, but can be applied to the other hydraulics and hydrology products as well. It would help to make sure that you have the folder options for "Show hidden files, folders, and drives" and "Hide extensions for known file types" are set as shown below. These are both located on the View tab and you can access the "Folder Options" by going to your Start button > Control Panel. 1. Copy “StormCAD.cfg” file from StormCAD installation location (e.g default: “C:\Program Files (x86)\Bentley\StormCAD8\”) to following Power GeoPAK installation subdirectory: "C:\ Program Files (x86) \Bentley\PowerGEOPAK V8i \PowerGEOPAK\config\appl\" 2. Copy “StormCAD.ucf” file from StormCAD installation location shown in step 1 to the following PowerGEOPAK Workspace\User location: "C:\ ProgramData \Bentley\PowerGEOPAK V8i (SS version)\WorkSpace\Users" 3. Copy “StormCAD.pcf” file from StormCAD installation location shown in step1 to the following PowerGEOPAK Workspace\Project\Examples location: "C:\ ProgramData \Bentley\PowerGEOPAK V8i (SS version)\WorkSpace\Projects\Examples\" 4. (Optional) To create a shortcut of Power GEOPak on desktop that will by select the “StormCAD” workspace user file by default: a. Right-click to Desktop and select New > Shortcut. b. Browse and select PowerGeoPak.exe i.e ("C:\Program Files (x86)\Bentley\PowerGEOPAK V8i (SS version)\PowerGEOPAK\PowerGEOPAK.exe") and click Next c. Enter ShortcutName something like “StormCAD for PowerGEOPAK” and click finish. d. Open the properties of newly created icon and under “Shortcut” tab, add “-wuStormCAD” at the end of “Target” and click OK. The Target file path should now look as follows: "C:\Program Files (x86)\Bentley\PowerGEOPAK V8i (SELECTSeries 4)\PowerGEOPAK\PowerGEOPAK.exe" –wuStormCAD When you run GeoPak from the new Shortcut, notice it has automatically selected “StormCAD” as a User and Project, which will start StormCAD in GEOPAK. If the user wants to use their own Project file, they can still enable the StormCAD integration by following additional Step: 1. Open “StormCAD.pcf” in notepad that we have copied above in step 3. 2. Select and copy line 15-20 (shown below): #---------------------------------------------------------------------- # Additional setup when running in MicroStation environment #---------------------------------------------------------------------- %if exists ($(MS_STORMCAD_ROOTDIR)config/appl/stormcad.cfg) %include $(MS_STORMCAD_ROOTDIR)config/appl/stormcad.cfg %endif 3. Open the Project file in notepad that user want to use, i.e, let's suppose you're using StormCAD with an “untitled” project configuration file, such as C:\ ProgramData \Bentley\PowerGEOPAK V8i \WorkSpace\Projects\untitled.pcf 4. At the end of the file paste the lines copied in Step 1. 5. Add a blank line at the end of the file (after the pasted lines). THIS IS VERY IMPORTANT . Now, when the user will start PowerGEOPAK with untitled project configuration, the StormCAD integration will be enabled. NOTE: Full and complete integration will be available starting with OpenRoads V8i Select Series 4, Maintenance Release 1 and will include the functionality of all the hydraulics and hydrology products installed with OpenRoads. StormCAD for up to 100 inlets, is included at no extra cost for the license and the functionality of CivilStorm, SewerCAD, and SewerGEMS are available with one click, which activates these higher level license.
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Forum Post: SewerGEMS: Global edit patterns for sewer flow
Hi In SewerGEMS, how do I global edit the patterns of a selection set using a Flextables? The inflow control centre does not seem to cater for sewer flows. Regards. Rossouw
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Forum Post: RE: SewerGEMS: Global edit patterns for sewer flow
Select the selection set , for which you want to edit the patterns With that selected go to Tools>Sanitary load Control Center Filter to current selection as shown in the screenshot below and then global edit the patterns for selection set.
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Forum Post: RE: SewerGEMS: Global edit patterns for sewer flow
Hi Sushma, I did not even notice the Sanitary Control center next to the Inflow control center! I need a break! Thanks!
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Forum Post: Wave speed calculation
How can we check whether the designed pipe/material considered can withstand the wave pressure generated in the pipe.
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Wiki Page: SewerCAD (GVF Convex Solver) vs SewerGEMS (Implicit and Explicit Dynamic solvers)
Applies To Product(s): Bentley SewerGEMS, Bentley SewerCAD Version(s): 08.11.03.84 Environment: N/A Area: Modeling Subarea: Original Author: Jesse Dringoli, Bentley Technical Support Group What is the difference between SewerCAD, SewerGEMS and SewerGEMS Sanitary? SewerCAD uses convex routing and a gradually varied flow profile for design and analysis of of sewer networks including mixed gravity and pressure flow. SewerGEMS is a superset of SewerCAD, including all its functionality, plus two fully dynamic solvers and ArcGIS integration support. SewerGEMS Sanitary was a separate program included with older versions of SewerGEMS V8i (08.11.01.21, 08.11.02.46, 08.11.02.49 and 08.11.02.75). It is installed automatically when installing these versions of SewerGEMS and includes all the functionality of the Bentley SewerCAD product, plus the ability to work inside of ArcGIS. As of SewerGEMS V8i SELECTseries 3 (08.11.03.77+) SewerGEMS Sanitary is no longer available with this specific brand name because of the conversion of all of our storm and sewer products into a unified file format. The unified file format now allows all the storm sewer products (StormCAD, SewerCAD, SewerGEMS, CivilStorm, and SewerGEMS) to open a model created in another product. In creating the unified schema SewerGEMS has been changed to incorporate all the storm sewer solvers, so if you want to run the SewerCAD solver (GVF-Convex) on your network you have the option to. This is really the same thing as having SewerGEMS Sanitary come with SewerGEMS, except you no longer need to open a separate program, and you also have the option to run the GVF-Rational (StormCAD) solver for your model if you choose. In other words, With the SewerGEMS SS3 release Bentley accomplished a convergence of SewerGEMS Sanitary modeling fully into SewerGEMS. As a result SewerGEMS embodies effectively a superset of the capabilities delivered in StormCAD, CivilStorm, SewerCAD, and SewerGEMS. All consolidate into a common data store. All differentiate by the computational engines that are selectively packaged into each product in service to a range of commercial use-cases across stormwater, sanitary, and combined systems. With this release SewerGEMS Sanitary was deprecated. It was cleanly folded into the SewerGEMS application. How do I know which is best for me to use? The SewerCAD application (and the GVF Convex numerical solver in SewerGEMS) is best used in systems that have complicated pumping, pressure sewers, and only need to use extended period simulation convex (EPS) routing as opposed to fully dynamic routing. SewerCAD should also be used if you need to perform a constraint-based automated design or if you need to run a steady state simulation, such as for a peak flow analysis with Extreme Flow methods. SewerCAD can be thought of as a bread-and-butter package that delivers conventional design and capacity analysis. Municipal-scale master planning is certainly part of it, but serves very well in site/civil arena as well. Routing is hydrologic with conventional back-water dominant hydraulics. Gravity analysis is complete with well-accepted state-of-the-practice hydraulic grade analysis with form losses. Diversions or splits are handled in explicit ways. I&I, similarly, is modeled using an array of fundamental and appropriate simplifying models. On the other hand, the SewerGEMS application layers into the mix engines for dynamic wave simulation, with ArcGIS integration support. So, if you have challenging cross-connections, loops or dynamic surcharging and ponding, this gives you the capabilities of EPA SWMM along with Bentley's own implicit solver. SewerGEMS (Implicit or Explicit Dynamic numerical solvers) is best for analyzing existing problematic systems, where catchment rainfall-runoff calculations are required or dynamic wave solutions are needed (if required by the reviewer or by way of the complicated nature of the particular network) or if you must work inside the ArcGIS platform. SewerCAD (GVF Convex solver) is not intended to handle overflow situations such as a case where you want to analyze a problematic existing system. When an overflow condition arises with the GVF Convex solver, the HGL is reset to the rim for an overflow condition. Howerver, the dynamic solvers in SewerGEMS (Implicit and Explicit SWMM solvers) do handle overflow, as they are intended for situations like this (problematic existing systems and/or complex situations). SewerGEMS' Implicit and Explicit solvers automatically calculate the overflow using the weir equation. SewerGEMS can handle complex things like control structures, diversions (without having to enter a diversion rating curve required in SewerCAD/GVF Convex solver) or ponds. Long term continuous simulations would be done using the Explicit solver in SewerGEMS. So, SewerGEMS differentiates in the market as being a singular, "top of the line" tool that will carry the engineer though all stages of design and analysis from conventional capacity and automated design of pipe networks into complex hydraulics of combined-sewer systems. SewerGEMS will handle both storm and sanitary models. Importantly, if you have any old StormCAD, SewerCAD or CivilStorm files they can all be loaded into SewerGEMS and brought cleanly ahead. See Also What is the difference between the SWMM solver and the Implicit Solver in SewerGEMS and CivilStorm?
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Wiki Page: How can I filter the Sanitary Load Control Center based on a selection set?
Applies To Product(s): Bentley SewerGEMS, Bentley SewerCAD, Bentley CivilStorm, Bentley StormCAD Version(s): 08.11.xx.xx Environment: N/A Area: Layout and Data Input Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Issue How can I filter the Sanitary Load Control Center based on a selection set? I only want to see load entries for nodes included in a particular selection set. Background Sometimes a user may want to apply loading data to a certain subset of elements in their model. While it possible to add loading to individual elements in the Sanitary Load Control Center, if you have a selection of elements, there is a more efficient way of applying the loading. Below are steps on how to do this in both the SELECTseries 3 release of the products as well as older builds. It is generally recommended to upgrade to the latest release. The process for adding loads to a selection set of elements has been greatly improved in SELECTseries 3 and later. Steps to Accomplish If you are using version 08.11.03.77 or greater: 1. Double click your selection set to select the elements in the drawing. 2. With the elements highlighted, go to Tools > Sanitary Load Control Center 3. Click the Options button (to the left of the help button) and choose Filter > Current Selection 4. You can now perform operations like global edits. Global edits are done by right clicking on a column header and choosing global edit.The changes will then only apply to the elements that are part of that selection set. If you are using version 08.11.02.75 and earlier: 1. Go to View > Selection Sets and double-click the selection set in question to select the element in the drawing 2. Go to View > FlexTables, right-click the manhole predefined FlexTable and choose "Open on Selection" 3. In the Manhole table, click the Options button and click "Relabel" 4. Choose "Append" as the operation and type in a unique string of characters for the "Prefix" field. For example, "SELECTIONSETA" 5. Click OK, close the manhole FlexTable, and open the Sanitary Load Control Center 6. Click Options > Filter > Custom. Choose "Label" as the attribute, "Begins With" as the operation, and "Value" for the Prefix 7. Click OK. You will now only see loads for manholes that are part of your selection set. 8. When done with your edit, you can restore the manhole labels by reopening the "Relabel" tool in the manhole table, choosing "Replace" as the operation and then your prefix in the "Find" field. "Replace with" will be blank, since you will essentially be deleting the prefix you had added in step 4.
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Forum Post: RE: SewerGEMS: Global edit patterns for sewer flow
Just to add to what Sushma stated above we have wiki link that describes this process located here on the Communities site: communities.bentley.com/.../11936.how-can-i-filter-the-sanitary-load-control-center-based-on-a-selection-set Regards, Mark
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Wiki Page: Using Extreme Flow Factors
Applies To Product(s): Bentley SewerCAD, Bentley SewerGEMS Version(s): 08.11.xx.xx Environment: N/A Area: Modeling Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Background Extreme flow factors are generally used for computing peak discharges, and therefore are typically referred to as peaking factors or peaking equations. However, since they can also be used to compute minimum discharges, the term extreme flow factor is more accurate and will be used throughout the program and documentation. This article applies to Bentley SewerCAD as well as Bentley SewerGEMS, when the numerical solver is set to "GVF Convex" (the SewerCAD solver). Steps to Accomplish Loading in SewerCAD is done through the Sanitary Load Control Center. Patterns can be applied are generally used for Extended Period Simulations (EPS). With Steady State runs using Unit Loading, a user will want to look at the peak flow to get a conservative analysis of system. That is where Extreme Flow Factors come in. To begin, you need to set up the Extreme Flow. To do this, go to Components > Extreme Flow Setups. To create a new Extreme Flow Setup, click the New button in the upper left. When you do this, a row will be added for each Unit Load associated with the model. You have the option to use a given load by placing a check box in the Use column. The other columns include the Extreme Flow Method and a couple of multipler options. There are a couple of options available to the extreme flow method. If you leave the Extreme Flow Method column set to "None" you can enter a constant. This is the multipler that will be used on the loading derive from the Unit Load in the Sanitary Loading Control Center. However, you also have the ability to use one of several Extreme Flow Methods. To create these, go to Components > Extreme Flows, or click the ellipsis button in the Extreme Flow Method cell in the Extreme Flow Setups dialog. Click the New button and choose from one of the four methods available. If you choose the Table methods, you will have to manually enter the base load value or the population and the extreme flow factor associated with it. Note that the keyboard shortcuts work with this table, so if you have the table values in a format like Excel, you can copy and paste the data into the table. If you choose the Equation methods, you will need to enter the coefficients for the equation. For convenience, the equation used to calculate the Extreme Flow Factor can be found at the bottom of the Extreme Flows dialog. NOTE: When choosing the method, be sure that it matches with your unit loads. For instance, if your unit loading is based on population, you should use a population-based extreme flow factor method. Once you have created the Extreme Flows, you must apply it to the Unit Load. Return to the Extreme Flow Setups dialog. In the Extreme Flow Method, select the table- or equation-based method you wish to use. If there is an extra adjustment you need to apply, you can enter a value for the Adjustment Multiplier. If you do not need to apply any extra adjustment, simply set the values in this column on 1.0. Now that the Extreme Flow Setups are completed, you need to apply them to the Calculation Option of the model. Go to Analysis > Calculation Options and double-click the active calculation option to view the properties. Find the properties field Extreme Flow Setup and set this to the Extreme Flow Setup you wish to use. Now when you compute the model, the extreme flow setup will be applied to the loading of an element. Please note : Extreme flow setups are only used for steady state simulations. They are not used for EPS runs. This is because a peak flow analysis is only valid in a steady state (snapshot of time).
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Forum Post: RE: HGL lower for larger rainfall event in CivilStorm
Sir, you can change the time step by going to the time browser (Analysis > Time Browser). There you can change the increment and if you right-click on Time from Start you can change it from minutes to hours or whatever you want. In the time browser, you can click on the time that you want to look at and the profile will jump to that time. I do see the peak at 12.05 hours, but I do not see a second peak as you mentioned. I see that the model is worked on in the latest build of CivilStorm. Do you have the latest patch applied?
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Comment on The check valve on a pipe is not opening... (Solution 500000072356)
I have 12 3/4" check valves on a/c back up units that never get used only in an emergency. The are on gravity flow to an ejector pump,the problem is because of no activity the check gets stuck, do I need the check valves and if so is ther another solution?
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Forum Post: RE: How can I adjust the pressure on the system?
Hello, Similarly to this case, I want to simulate a positive displacement pump and I added a "Periodic Head-Flow" but on my network I have two check valves and when I run the system gets the error "Node is not connected to, or is isolated from, a boundary (reservoir or tank)" And I don't understand what happen because the direction of check valves is correct. For the other hand, I want to know how consider the viscosity changes for a heavy crude along the network. Thanks Regards
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Wiki Page: How do you troubleshoot large SewerGEMS or CivilStorm models when using the implicit solver?
Applies To Product(s): Bentley SewerGEMS, Bentley CivilStorm Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How do you troubleshoot large SewerGEMS or CivilStorm models when using the implicit solver? Solution If your model does not successfully calculate, try the following steps: 1. If you are running hydrology (rainfall on catchments) as well as hydraulics, check the outflow hydrographs from catchments to make certain they are reasonable. In order to do this you can right click on the catchment and choose to graph the flow. 2. Check the model for errors: Use the Validate command and look at the warnings and/or errors that are reported. Fix as many you can while keeping in mind the goal of the model is to make it resemble what you have in the field as closely as possible. When you Calculate the model, validation routines are performed that are not included during a Validate operation. Review the warnings and/or errors that are returned after calculating the model too. Common data problems to look for include: I ncorrect channel or conduit slopes : Reasonable slopes are generally small and rarely negative. You can view slopes along a reach visually by using the Profiles feature. You can find unusually large or negative slopes through User Notifications and FlexTable reports. You can Color Code link elements by Slope and look for excessive values. If the model has parallel conduits connected by a flat (slope value of 0) conduit, try making that conduit Inactive. I nc orrect Channel or Conduit size : Look for unusual size changes along a reach. Color code drawing by Diameter to look for this type of discrepancy and or create numerous profiles for an even better visual of your pipe sizes. This will help you locate bottlenecks in the system that could be causing calculation problems. Very low flows : If flows are less than 0.01 cfs (0.001 m3/s), depths may fall below accuracy tolerances. Look for areas displaying common modeling difficulties and verify input data is correct: Flow splits at weirs and orifices that are dry at certain points during an extended period simulation. Hydrograph rapidly changes within a short time (minutes). Very sharp flood wave. Near-critical slopes. Significant and abrupt changes in the conduit size, shape and/or slope. Looped networks. Backwater up to a control structure. Significant backwater conditions. Flow control structures on relatively small storage nodes (ponds, wet-wells). System inflows vastly exceeding the system capacity resulting in mass flooding. Unusually small ponds compared to their inflow. Outlet structures on pond outlet structures with instability (saw-tooth pattern HGL or flow) Many pumping stations in the system. Look for a mix of very long and very small pipes, especially when using the SWMM engine. Eliminate or combine short pipes because their effect on routing is small. Break exceptionally long pipes into mutliple pipes that are each roughly the same length as other pipes in the network. Composite outlet structure data entry (Components > Composite Outlet Structures) Remove unnecessary check valves from pressure pipes. Users commonly use the option to have a check valve on pressure pipes that are directly downstream of a pump, but this is unnecessary because pumps already have built in check valves. Keeping them can cause unnecessary difficulty for the solver. Examine the User Notifications that are displayed after calculating. Examine Graphs and Profiles. Create Flow plots at splits and at pump discharge areas and look for jagged peaks in the plot. 3. SIMPLFY, Simplify, simplify When using a dynamic modeling solver things are not always simple to solve and little changes can sometimes make a big difference. What you should keep in mind when creating a dynamic model is to keep things as simple as possible and only model what you really need to study. In other words, if there are some conduits that can be left out because they won't have a significant effect on what you are studying or don't provide a lot of flow don't put them in the model or take the flow they would produce and add it to another node element as an inflow. With dynamic modeling less is better than more. Examples An example of this would be if you had a set of parallel conduits with the exact same physical properties. Instead of putting both conduits in the model you might model this as one conduit with 2 barrels. Another example would be when you have a pond with an outlet structure. Let's say the outlet structure was made up of a 24 inch orifice and a weir at the very berm of the pond. After going through the outlet structure the water goes into a 24 inch conduit. Assuming the water never gets up to the level of the weir what you could do to simply this situation is set the Pond Outlet Structure property for "Has control structure?" = 'No'. In this situation, this can be done because the conduit was the same size as the orifice, so the conduit will act as the controlling structure for incoming water. We found a workaround for the model because we determined that the problem was being caused by the outlet structure. The workaround was to set the outlet structure to has control structure? = no, because the weir was never being used in the outlet structure and the orifice that was being used was the same size as the conduit. Therefore, the conduit opening would do pretty much the same thing as the weir in terms of restricting the flow making this a possible solution. The change allowed the continuity error to drop and gave the results the user was expecting for flow out of the pond. If you did need to model the weir you could add in another composite outlet structure set up the same way as above and downstream connect the outlet structure to a channel with a section type of irregular channel. Then you could create the irregular channel in the same shape as your weir. The results should be the same and the simplified workaround might be just what you need to help stabilize the results for your model. 4. Adjust the calculation options to reduce the continuity error Default values for calculation options will work for the majority of cases, but some systems need small adjustments to converge. When the calculation is moving very slowly (you can observe that the model is stuck at certain times) or the results show apparent instabilities, it is an indication that the model is experiencing difficulties in converging to a stable and robust result. Try adjusting calc options in the order below. This is an iterative process and only one option should be adjusted at a time to see whether it gives better results or worse results. If the choice provides better results see if you can adjust it again more in the same direction to provide even better results than the first choice. For example, if changing the computational distance at 50 ft provides a continuity error of 25% and adjusting to 10 feet provides a continuity error or 15% then try to adjust it further to 5 feet to see if you can reduce the continuity even more. The goal with this is to get the continuity for the model under 5% and the lower the error the more accurate your results. Initial conditions: Options include warm start or transitional start. Try both and see if one gives better results for your system. Computational Distance Calculation Time Step NR Weighting Coefficient Most of the time you can get the continuity error under 5% using the 4 options above. If you still need to adjust things after that continue in the order below. Try an NR Weighting Coefficient value of between 0.9 and 0.99 with the default Computational Distance and Calculation Time Step. Set NR back to default and try reducing the Computational Distance value. Set Computational Distance back to default and try reducing the Calculation Time Step value. Keep the Calculation Time Step the same and repeat the above steps. Try increasing the the NR Iterations to 20. Try increasing the LPI Coefficient to a value over 10.0. You do not need to go higher than 15. Note: There is no absolute rule on whether the time step, LPI Coefficient, or the NR weighting coefficient should be changed or to what specific value; normally you should reduce the time step and increase the NR coefficient but sometimes the opposite can also help. 5. Isolate problems areas: Isolate the problem area by incrementally deleting small sections of your model and re-computing. This may help you narrow down the source data that the engine has trouble with. It may expose data entry issues or areas that are exhibiting common modeling difficulties. 6. Determine at what time step the problem occurs. Look for what is happening at that time. Is a weir beginning to overflow? Is it the first time a large pump comes on? Sometimes it's easiest to look at your user notifications for the time or locate the problem on a profile and slide the time browser bar to that location before examining the model. 7. Switch to using the SWMM numerical solver (Analysis > Calculation Options > Click on the active option to open the properties). If there are problems when using the SWMM engine, try changing the Routing Method from Dynamic Wave (default) to Kinematic Wave or Uniform Flow. These methods do not handle backups as accurately as dynamic wave, but they tend to be more stable. Note: Headlosses at nodes are ignored during periods of supercritical flow. 8. Check your pumps to make sure the operational controls (if any are applied) have a large enough range between the On and Off value. What you're trying to prevent is having the pump cycle On and Off very quickly.
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Forum Post: RE: Sewergems exporting SWMM - can I export notes?
What you are trying to do is not currently supported. I submitted the following enhancement requests on your behalf: #329427 - Export the SewerGEMS element attribute "Notes" to the "Description" field in EPA SWMM and vice versa #329545 - Retain the element attributes "Notes" and custom user data extensions when exporting to INP and importing back into SewerGEMS Could you explain the need to export to the SWMM .inp format? Note that SewerGEMS includes the SWMM solver, which can be selected from the Calculation Options. If you would like to send the model to someone who doesn't have SewerGEMS, I recommend looking into exporting i-models , which can be opened with Bentley Map Mobile and Bentley View for free.
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Forum Post: RE: How can I adjust the pressure on the system?
Lyanne, You might want to try something like what is described in the wiki below in order to identify what is caused the isolation. If it's not an initially closed pipe then it could be an initially closed valve. A quick check of the properties of the elements surrounding the isolated element should allow you to figure that out. communities.bentley.com/.../20403.node-is-not-connected-to-or-is-isolated-from-a-boundary-reservoir-or-tank-user-notification You second question can be answered by this wiki solution found here: communities.bentley.com/.../10197.can-a-different-liquid-be-modeled-in-watergemswatercadhammer Regards, Mark
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