7 November 2019

FAQ 003344 EN

Bastian Kuhn

General

RFEM

RSTAB

Eurocode 1

Are the vertical wall surfaces determined when generating wind loads by using surface loads for an open building?

Answer

No, they are not included by default. The wind load generation using surface loads always determines the wind load that is orthogonal to the spanned surface.
For the attached example, however, Figure 02 shows that the loading in the wind load surface amounting 0.5 kN/m² is relatively easy to convert.

It is also possible to generate the wind load for any building geometry with the new stand-alone program RWIND Simulation. This provides you with the possibilities for wind simulations and generating wind loads.
In conjunction with the structural FEA software RFEM or the structural frame analysis software RSTAB.

Input
The direct import of models from RFEM or RSTAB allows you to define the relevant parameters for the analyzed wind directions with the height-dependent wind profiles, based on the wind standard. This results in the corresponding load cases with globally defined parameters.

Without RFEM or RSTAB, RWIND Simulation can also be run manually. Furthermore, you can import the data from the STL vector graphics.

It is also possible to import terrain and buildings of the environment into the simulation from the STL files.

By exchanging the data between RFEM or RSTAB and RWIND Simulation, you can easily use the results of the wind analysis as load cases in your usual RFEM or RSTAB work environment.

Features of RWIND Simulation
3D incompressible wind flow analysis with OpenFoam solvers
Direct model import from RFEM/RSTAB or STL files
Simple model changes using drag & 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 within a few minutes for low-resolution simulations (up to 1 million cells)
Results within a few hours for simulations with the medium/high resolution (1‑10 million cells)
Graphically display of results on the Clipper/Slicer planes (scalar and vector fields)
Graphical display of streamlines and streamline animation

Keywords

Wind load Compression Surface load

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD