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Pavlina Monhartova

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About Pavlina Monhartova

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  1. Hi Richard, There are only two possible options available at the moment - classic or 1D weir as the global factor is not supported in HPC yet. Knowing that your HPC model is going to be large you might need to play with the 1D weir and conduct some sensitivity testing. Kind regards, Pavlina
  2. Hi Lucy, The depth to groundwater (DGW) isn't predefined with the -type switch within the TUFLOW_to_GIS utility such as depth, water level and velocity, however, there is a way how to convert these less common data types as well. XMDF files contain a number of scalar (s) and vector (v) datasets. For example, switch -s1 will convert the first scalar dataset. A summary of the available datasets is listed within the DOS window when TUFLOW_to_GIS is preprocessing results and the summary is unique for every XMDF. If you write "pause" at the end of the processing batch file, the DOS Window won't disappear and you can scroll through to find the summary and the number for the depth to groundwater dataset. Below snapshot shows an example of such summary and the Depth to groundwater output could be converter to ASC with -s6 switch. Please note that maximum and minimum is not available for the depth to groundwater output and switch -t<output time> will need to be specified to produce the output for a specific time. Kind regards, Pavlina
  3. Hi Melodea, The latest 2018-03-AE TUFLOW release is rounding up the third decimal space for form loss coefficient in the 2d_lfcsh layer. We already have a task created on our development list to increase the number of decimal spaces for future releases. Kind regards, Pavlina
  4. Hi Peter, Thank you for posting this. It isn't currently possible to do what you have described, however we already have this "super scenario" task on our development list for future releases. Please stay tuned. Kind Regards, Pavlina
  5. Hi Melodea, To investigate the issue, please send the .tlf, the bridge GIS layer and the 2d_lfcsh_uvpt_check file to support@tuflow.com. Looking forward to your email. Kind regards, Pavlina
  6. Hi Ketaki, I have sent a DropBox link to your email for the upload from support@tuflow.com. Kind regards, Pavlina
  7. Hi Ketaki, Please use the latest TUFLOW_to_GIS utility available on the TUFLOW website (currently 2018-08-AA). If the issue persist, please send the .xmdf and .2dm to support@tuflow.com Kind regards, Pavlina
  8. Hi Piergiorgio, Unfortunately, this is not currently available as you described. Please send more details to support@tuflow.com (what real life situation are you trying to model, what criteria are you concerned about) and we can consider adding it to our development list and perhaps offer a workaround. Thank you. Kind regards, Pavlina
  9. Thank you Peter for your input. All the suggestions are worth considering for the modelling exercise presented by the initiator of this post. All of them have some caveats that have also been mentioned. Just to elaborate on the unexpected results from the initial query: The layered flow constriction layer modifies the cell width factor and form loss coefficient with height to match the flow area required based on the blockages and form loss coefficients specified in the 2d_lfcsh layer. The solution is still fundamentally a 2D solution (a single velocity is calculated for the cells) and not a 3D solution. Currently it is not possible to 100% block cells in mid air in TUFLOW to simulate a building on piers. We have already had a couple of suggestions to create the layered storage reduction factor and put it on our development list for future releases. However, the storage reduction factor would also be averaged in height similar to the 2d_lfcsh layer. Until this new feature becomes available, as suggested from Peter, you can use different 2d_srf layers for different events to accommodate for the loss of storage. If you decide to try the 1D-2D approach from Peter’s last post with the NA table, the elevation/stage would be in a first column and surface area in the second column. The Manual has been updated to reflect this for the next release. However, based on your 2D cell size and the scale of the building, replacing the building with a 1D node may significantly change the flow around it. If none of the suggestions seems acceptable for your project, maybe you can share with us a bit more about the purpose of your model on support@tuflow.com and we can provide you with a bit more guidance. Kind Regards, Pavlina
  10. Hi Duncan, To add depth as a PO point output is on our list for future releases. In the meantime, you can subtract the depth from water level PO point and DEM point sample. Kind regards, Pavlina
  11. Hi Josh, Please email the .tlf, PO.csv to the support@tuflow.com with a description of the model configuration, preferably with some spatial snapshots of the 1D structures and its boundaries (if not done already). Kind regards, Pavlina
  12. Hi Francis, As a default, only the first graphics card (ID 0 / -pu0) is used for TUFLOW HPC-GPU simulations. If you want to use the second, third, fourth graphics card either the "GPU Devices IDs" command should be specified withing the .tcf or you can use the graphics card switches in the batch file (-pu1, -pu2, -pu3). When two or more simulations are running on the same graphics card or the same set of graphics cards, the computational resources are shared between the simulations and the simulations might slow down. If you don't want your simulations to slow down due to the shared resources, you can either use the "GPU Devices IDs" command or the batch file switches. Kind Regards, Pavlina
  13. Q: My TUFLOW simulation crashes at random with no particular reason. The DOS console just disappears without any pop up notification and there is no error in the .tlf. A: This can happen when TUFLOW is writing results out to a network drive and the computer loses connection to the network. This applies to Windows 10, 8, 7 operating system. With Windows XP, the simulation would only pause and restart itself when the access to the network drive is back on. The difference in the behaviour is unfortunately based on the operating system and as far as we are aware we are unable to do anything within the TUFLOW code to handle this situation. To prevent this from occurring, we recommend you set a local drive as the output drive using .tcf command such as “Output Drive ==”. If you wish to immediately have the results copied back to the network drive at the simulation end, Robocopy can be added to the end of the .bat file. Example of such batch file is in the attachment. Should the cause for the crash not be due to the network failure, then please contact support@tuflow.com, attaching the .tlf file. Kind regards, Pavlina run_TUFLOW_and_rbcp.txt
  14. Hi, The soil infiltration and rainfall losses can be used in the same simulation. Rainfall that doesn’t reach the ground, such as through the interception by trees, is best represented as a rainfall loss. This would remove the loss depth from the rainfall before it is applied in the whole model. The soil infiltration will then be applied only to the wet cells based on the soil type. Regards, Pavlina
  15. Hi Kate, Map output data type “R” (flow regime) can be specified to visualise where the weir flow is being calculated. The output value is ‑1.5 for broad-crested weir flow; 0 (zero) for normal (sub-critical flow with momentum); greater than 1 for upstream controlled friction flow (eg. supercritical flow); and ‑1 for flow through a flow constriction when the deck is submerged. Please note that when using the default cell corner approach, the flow regime is a weighted average of the flow regimes at the four adjoining cell mid-sides, which can be misleading. Using the Map Output Format == SMS HIGH RES option will output the exact flow regime occurring at the cell mid-sides. Kind Regards, Pavlina
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