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Learn HEC-RAS
United States
เข้าร่วมเมื่อ 25 เม.ย. 2022
Creating a basic HEC-RAS 1D Floodplain Model
Learn how to create a basic 1-dimensional steady state HEC-RAS flow model in this straightforward tutorial. I cover the basic concepts and theory of the HEC-RAS step backwater calculations used by the program and show the practical steps to set up a simple floodplain model.
I also demonstrate some ways you can review your results to see any obvious errors or warnings that may require revisions to your model. Hydraulic modeling is often an iterative process so you often have to refine your model based on the results of your previous iteration. With more experience and skill you can improve your initial model developments but even the most experienced modelers have to review their model results and make improvements to hone in on the optimal model for their specific application.
**Note, in the video when I go to run the model I get an immediate error from HEC-RAS. Sometimes this can happen when you build a model from scratch in RAS Mapper. If somewhere along the process you get some RAS Mapper error it can temporarily prevent model from running until you've closed and restarted the program which can fix a lot of temporary issues. So if you get some unknown errors from RAS, I've generally found it best to just save your work, close out the program and restarting it before you waste a lot of time trying to debug the issue in the active session. Just try turning it off and on again :-)
I also demonstrate some ways you can review your results to see any obvious errors or warnings that may require revisions to your model. Hydraulic modeling is often an iterative process so you often have to refine your model based on the results of your previous iteration. With more experience and skill you can improve your initial model developments but even the most experienced modelers have to review their model results and make improvements to hone in on the optimal model for their specific application.
**Note, in the video when I go to run the model I get an immediate error from HEC-RAS. Sometimes this can happen when you build a model from scratch in RAS Mapper. If somewhere along the process you get some RAS Mapper error it can temporarily prevent model from running until you've closed and restarted the program which can fix a lot of temporary issues. So if you get some unknown errors from RAS, I've generally found it best to just save your work, close out the program and restarting it before you waste a lot of time trying to debug the issue in the active session. Just try turning it off and on again :-)
มุมมอง: 4 427
วีดีโอ
HEC-RAS 2D Model Sensitivity
มุมมอง 1.1K11 หลายเดือนก่อน
In this video, I explore the sensitivity of some of the HEC-RAS 2D model features and parameters. I'll look at a simple 2D model and test several variables for sensitivity. I'll evaluate the impact of cell size, use of breaklines, and evaluate the diffusion wave equation vs. the full momentum equation results.
Hydro-Correction using RAS Mapper Terrain Modification
มุมมอง 1.5Kปีที่แล้ว
Learn how to easily make hydro-corrections to your terrain data using the Terrain Modification tool in RAS Mapper.
Using 2D Water Surface Gradients in HEC-RAS
มุมมอง 336ปีที่แล้ว
Learn what these colored water surface gradients mean and how to use them to review your HEC-RAS 2D model results. Use them to quickly identify areas of critical flow, backwater, or normal flow.
Which RAS Mapper Render Mode is Best?
มุมมอง 319ปีที่แล้ว
Comparing the available RAS Mapper render modes available in HEC-RAS v. 6.4.1. See the pros and cons to each render mode and understand how RAS Mapper is producing the mapped results. Learn which render mode may be best for your HEC-RAS project.
Creating a HEC-RAS 2D Rain on Mesh Model
มุมมอง 7Kปีที่แล้ว
A basic overview of the steps needed to create a HEC-RAS 2D Rain on Mesh model. A high level tutorial showing the process for building, running, and reviewing a 2D Rain on Mesh model.
How to Use Breaklines in HEC-RAS
มุมมอง 4.5K2 ปีที่แล้ว
Learn how to create and edit breaklines in a HEC-RAS 2D mesh.
Thanks for the video, is there any way to generate unstructured mesh using break lines, I mean unstructured mesh for whole the 2D flow area.
READ_UN_MET_PRECI 233 Read_UN_Met.for Error with program，when i run the official example about grid precipitation.How could i solve it?
Hey, I like how you are technically sound while explaining your tutorials. I wonder if it could be possible for you to make a set of videos with different topics like dam breach, sediment transport and other common topics. Thanks so much for this. :)
Please, complete the model with a bridge
good
thanks for sharing this content
Brilliant! keep it up!
Hi, Bro the Cross-section data! Which You open at 18:42 in Video. the Coordinates mentioned. Are they already mentioned? or RAS Mapper GIS survey data automatically Imports from there? Please Reply. Thank You!
Thanks for sharing! Would you mind teach how to use the Meteorological Data tool to load raster file? That would be helpful and no one did it before on the TH-cam.
Promo SM 😁
Is it possible to draw a rectangular channel? Or is only possible in 1D model?
yes it's possible
Hi, thank you for your video. I have a question. If I have computed my rainfall excesses previously, so I suppose that I would not need an infiltration layer right?
Correct, if you compute your rainfall excess outside of RAS you would not need an infiltration layer. Keep in mind that if you want or need to have spatial variation in your infiltration, you will need to use gridded excess rainfall as an input to your RAS model. Hope that helps!
Hello sir! I am a masters student. I need to do floodplain modelling. Could you please help me? Is there any way to contact you?
I just uploaded a video showing the steps to create a 1D floodplain model. Let me know if you have any specific questions. th-cam.com/video/p8Cu-4Yv104/w-d-xo.html
Hi! Awesome content! Could you please make a dam break model? With hydrograph inflow into the reservoir, dam breach parameters and the outflow results, please?
From the presentation.. I beleve this guy can do way more than the dam break model.
Please send the educational files
Would you be interested in giving help with a project or a one on one tutorial?
I would be open to that possibility. Let me know if there's a way I can reach out to you directly!
Podrías subir un modelo lluvia escorrentía 2D para ver el efecto de un conjunto de alcantarillas en una carretera sobre una llanura aluvial? Gracias Bro
Very nice tutorial, thanks. I would like to reach you via email for a few questions , can you please provide your email address?
Thanks a lot! Impressive tutorial. please make more videos on HEC-RAS. I look forward to your tutorial on flood routing and inundation.
Hi!!! Waiting for the next ideas, indications maybe even problems encountered and solved. good explanation, except that the cells were quite large. Thanks!
Awesome explanation