Load Cases
The second tab of the Simulate and Generate Wind Loads dialog box gives you a list of the generated load cases and their descriptions. The result depends on the wind directions that you have previously defined in the Wind Load tab. If you have set a uniform, fully circular arrangement at angles of 45°, for example, eight load cases are created as seen in the Image above.
By default, the first free load case number is used as the initial one. If necessary, use the 'Settings' tab (see below) to set a different number for the first wind load case to be generated.
The Calculated column shows you whether results of RWIND Simulation are available (you need to calculate a load case first, see the Chapter 'Calculation in RFEM/RSTAB').
You can enter a Comment to describe the parameters of each load case, for example.
The [View Mode] button at the end of the table enables you to jump to the work window and check the directions of the wind loads. As described above, the angle φ refers to the positive global X-axis, with a clockwise rotation about the positive Z-axis.
The functions [Calculate All in Background] and [Calculate LC in Background] are described in the Chapter 'Calculation in RFEM/RSTAB'. They will execute a “silent” analysis of all load cases or of the selected one, respectively. The [Open in RWIND Simulation] button, however, calls up the RWIND Simulation program. There you can view the model and its location within the wind tunnel. You can also check whether the mesh settings are adequate (see the Section 'Model Simplification' and the Section 'Finite Volume Mesh') and adjust the parameters, if necessary.
Note
Before applying [Calculate All in Background], you should check the transfer of the model and its simplification in RWIND Simulation. Calculate one load case and follow the progression of the residual pressure. Then examine the plausibility of the results. It might be necessary to adjust the wind tunnel, FE mesh, level of detail, etc. When everything has been verified, a “blind” analysis of all load cases in the background may be justified.