The RWIND Simulation Team is pleased to announce the availability of RWIND Simulation Pro 1.24.0250. This program was developed in cooperation with PC-Progress and CFD Support and can be used as a stand-alone application or as a complement to RFEM / RSTAB programs for static and dynamic analysis.
Generate wind profiles and turbulence intensity diagrams according to the following standards: EN 1991-1-4 (with National Annexes), United States of America ASCE/SEI 7-10, United States of America ASCE/SEI 7-16, Canada NBC 2015.
Update Report No. 03229 RWIND Simulation 1-24-0250 | 10/23/2020
- Implementation of point and line probes to display the result values at user-defined positions
- Inclusion of the aerodynamic pressure coefficient cP as well as the turbulences in the range of simulation results
- Implementation of an option to define local FE mesh refinements
- Implementation of the detail size in RFEM's input window
- Implementation of an option to retain the results from RWIND Simulation in the tab of RFEM's input dialog box
- Implementation of the wind profile according to ASCE/SEI 7-10


RWIND Simulation is an outstanding tool for creating wind-induced loads on general structures. RWIND Simulation is a separate program which is used externally to determine load cases and wind loads for RFEM or RSTAB models. As for RFEM, the model may consist of beams, surfaces, and/or solids in any composition. For RSTAB models, loads can be created for models that fully conform to the structural system, such as lattice towers or braced girders without cladding. RWIND Simulation uses a numerical CFD (Computational Fluid Dynamics ) model to apply a fluid-mechanics simulation of the flow around objects in a wind tunnel. As a result of the simulation process, specific wind loads are created for RFEM or RSTAB.
For the simulation, a 3D mesh of finite volumes is used. RWIND Simulation performs an automatic meshing, while the overall mesh density as well as the local mesh refinement near the model can be easily set using just a few parameters. For the calculation of the air flow and the surface pressure on the model, a finite volume numerical solver for incompressible turbulent flow is applied. The results are then extrapolated on the model. RWIND Simulation has been designed to work with various numerical solvers. Currently we recommend using the OpenFOAM software package, which according to our tests gives very good results and is a widely used tool for CFD simulations. Alternative numerical solvers are under development.
RWIND Simulation is able to read the topology from RFEM or RSTAB models or from external *.stl and *.vtp files (importing *.ifc, *.stp and *.igs files is in preparation). Minor corrections of the model that may be required for corners or joints are applied automatically. The data relevant to the loading can be defined either in RWIND Simulation or in RFEM/RSTAB where a separate window is available. The latter option is recommended: It enables you to create load cases at equidistant angles and apply velocity profiles according to specific standards. Effects of turbulence can be included optionally. The dimensions of the wind tunnel are set to the size of the model but can be modified, if necessary.
The results of the simulation include the pressure and velocity fields around the model, the streamlines, as well as the surface pressure and the member forces. They represent the results of a stationary analysis. All results are illustrated by means of color maps (isobands) or isolines on the model or by slicer planes within the wind tunnel, respectively. The streamlines can be displayed in an animated view, which makes it easy to evaluate the effects of laminar and turbulent flow. As an essential result of the simulation, loads are created for the RFEM/RSTAB model. They are exported to the respective load cases where they are applied as FE nodal loads or member loads. To check the surface loads resulting from the velocity profile, a special feature is available to display the load distribution in one of the global or local directions.
Webinar: RWIND Simulation | Wind Load Simulation and Generation






Since 1987, Dlubal Software has continuously developed and optimized user-friendly and powerful programs for structural analysis and design.
With more than 280 employees at 9 locations providing continuous software support, Dlubal Software has gained more than 86,000 satisfied users worldwide.
Product: Dlubal RWIND Simulation
Version: Pro 1.24.0250
Supported Architectures: x64
Website Home Page : www.dlubal.com
Language: multilanguage
System Requirements: PC *
Size: 480.1 mb


System Requirements.
In order to use RWIND Simulation, the following system requirements should be met:
- Operating system Windows 7/8.1/10 64-bit
- x86 CPU with 2 GHz
- 2 GB RAM
- USB interface for the installation (if no installation via )
- 20 GB hard disk capacity, including approximately 4 GB required for the installation
- Graphics card with OpenGL acceleration and resolution of 1024 x 768 pixels. Onboard solutions and shared-memory technologies are not recommended