Have you tried Parametric study under Tools?
Thank you for your reply.
I started learning how to use parameter study.
I am still little bit confused.
I tried to change wind direction while conserving its magnitude; therefore, if I change wind direction, x and y direction wind speed should simultaneously changed. In parameter study obtion for ambient flow condition, I guess, I am only allowed to modify a single parameter. Can you futher help me to solve this problem?