![]() Take this aircraft, flying at about 97 knots with different turbulent inlet conditions. Furthermore, if the wind was blowing in a different direction, the clean flow that was present in another condition might become very turbulent and completely change the results.ĭepending on your case, the effects of turbulence in the freestream may alter your results in different ways and with different magnitudes. If placed on the wake side, however, the turbulence of the flow needs to be better approximated. On the flow side of the mountain, there is little turbulence and therefore the inlet conditions can reflect that. The above simulation illustrates turbulence generated by a flow around a mountain, showing that if you wanted to place a domain at a location on this mountain-for wind generation, for example-the turbulent boundary conditions may vary dramatically upon domain placement. ![]() CAD model kindly provided by Rrett Thys from GrabCAD. Figure 1: Simulation of flow around a mountain, volume rendering showing \beta, and streamlines showing speed and direction of flow. ![]()
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