FAQ 004131 EN
How do I determine wind loads on structures of any shape?
Answer
Input
You can also run RWIND Simulation manually without RFEM or RSTAB. Furthermore, it is possible to import the data from STL vector graphics.
The import of terrain and buildings of the environment into the simulation is also possible from STL files.
By exchanging the data between RFEM or RSTAB and RWIND Simulation, you can easily use the wind analysis results as load cases in the usual RFEM or RSTAB work environment.
Features of RWIND Simulation
- 3D incompressible wind flow analysis with OpenFoam solvers
- Direct model import of RFEM or RSTAB or STL files
- Simple model changes using Drag and Drop and graphical adjustment assistance
- Automatic corrections of the model topology with shrink wrap networks
- Option to add objects from the environment (buildings, terrain, ...)
- Height-dependent velocity profiles according to the standard
- K-epsilon and K-omega turbulence models
- Automatic mesh generating adjusted to the selected depth of detail
- Parallel calculation with optimal utilization of the capacity of multicore computers
- Results in just minutes for low-resolution simulations (up to 1 million cells)
- Results within a few hours for simulations with medium/high resolution (1‑10 million cells)
- Graphical display of results on the Clipper/Slicer planes (scalar and vector fields)
- Graphical display of streamlines and streamline animation
Keywords
Wind Wind simulation Wind load Wind load generation Digital wind tunnel
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Knowledge Base Articles

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In RFEM and RSTAB, snow drift is considered according to 5.3.4(3) of DIN EN 1991‑1‑3 for multi‑span roofs.
Screenshots
Product Features Articles

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Depending on stiffness, mass, and damping, structures react differently to wind action.
Frequently Asked Questions (FAQ)
- I noticed deviations from my sources in the online service "Geo-Zone Tool: Snow, Wind, and Seismic Zone Maps." Where can I find the information about the sources of your online service?
- I noticed deviations from the map of DIN EN 1998‑1 or DIN 4149 in the online service "<a href="https://www.dlubal.com/en/solutions/online-services/snow-load-wind-speed-and-seismic-load-maps" target="_blank">Geo-Zone Tool: Snow, Wind, and Seismic Zone Maps</a>." Can you tell me which map is current and thus governing?
- Are the models and presentations from Info Day 2020 freely available, and can you send them to me?
- Which load direction should I selected for members and surfaces in the case of a wind load?
- Where can I define a wind velocity diagram according to a specific wind standard for the numerical wind tunnel analysis in RWIND Simulation?
- Why is the field "Set Wind on Side" grayed out in the wind load generator after selecting the nodes of the basic geometry and roof geometry?
- Which roof and ground plan shapes can be considered with the wind and snow load generators of RFEM/RSTAB?
- Are the vertical wall surfaces determined when generating wind loads by using surface loads for an open building?
- Can I also use the wind load generator for open buildings?
- We would like use the online maps on your website to find the snow, wind and seismic loads. Can you please tell us more about activating and using this service?
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