[Matthew Anderson]

Suppose we have a road vehicle traveling forward with some headwind $-v$ under some wind $w$. The traditional apparent wind modeling approach says to add the headwind and wind vectors, and for a given $(v,w)$, we would give CFD an apparent wind speed and yaw angle. My concern is that this does not accurately account for the fact (?) that headwind and wind are not the same: headwind does not follow the same logarithmic-gradient that true wind does. Is this concern valid, and if so, what can be done to mitigate it? (If it is relevant, I typically use Star CCM and Ansys Fluent).