Wind Simulation

Load Cases & Combinations, Wind Simulation

List

All load cases (LC) of the model are listed on the left of the "Load Cases" tab. There, you can create a new LC, copy it, or delete it. The other functions available from the buttons at the end of the list are described in the table below.

	Creates a new load case
	Copies the selected load case(s)
	Adds loads to a new or existing load case
	Selects all load cases
	Inverts the selection of load cases in the list

Settings

In this area, assign the "Wind Simulation Analysis Settings" (WA) to the selected load case.

Wind Simulation Analysis Settings

You can select the "WA" from the list or create a new wind simulation analysis settings type using the button. To edit the selected wind simulation analysis settings, click the button. The "Wind Simulation Analysis Settings" dialog box is described in Chapter Wind Simulation Analysis Settings.

Calculation in RWIND 3

You can also start RWIND 3 by clicking the button in the right corner of the "Settings" area. This function exports the model data relating to one of the load cases to the RWIND 3 program.

There, you can review the settings of the wind tunnel, mesh, simplification of the model, and so on. If necessary, you can adjust the parameters. Here is an example of a common procedure:

• Start RWIND 3 calculation.
• Check the results.
• Quit RWIND 3 and return to RFEM 6 / RSTAB 9.
• Calculate the remaining load cases, if applicable.
• Inspect the imported loads in the work window and tables.
• Combine the wind load case(s) with other load cases in load and result combinations, if applicable.
• Finally, start the calculation of the deformations and internal forces.

Find more information in this Knowledge Base article.

Wind Profile

In this area, assign the "Wind Profile" to the selected load case. You can create a new wind profile by clicking the button. To edit the selected wind profile, use the button. The "Wind Profile" dialog box is described in Chapter Wind Profile.

The wind profile is displayed in the right part of the window. You can switch between the velocity profile and the turbulence intensity profile using the button. The button enables you to switch between the Wind Profile and the Wind Tunnel display.

Wind Profile and Wind Tunnel

The "Wind Direction" affects the wind exposure of the model. The angle α to set the wind direction refers to the positive global X-axis of the model. The rotation is defined clockwise about the positive Z-axis.

Options

The "Define experimental data from wind tunnel" option allows you to set experimental pressure at defined "Additional surface result points"; checking the checkbox opens a new "Experimental Data" tab for entering data and necessary parameters. See Chapter Experimental Data for more info.
The second option, "Use experimental data for static analysis", allows post-processing of the specified experimental data using static analysis in RFEM.