Numerical simulation of the wind field over complex terrains based on the vortex lattice method

In order to avoid the problems of existing methods, a numerical simulation method for wind field over complex terrain is developed in this paper for the engineering use of flight dynamics. Based on the vortex lattice method, the effects of terrains on the wind field are considered by a serial of vortexes/vortex ring, whose strengths are solved by combining with the ground boundary conditions. Numerical examples are studied by the proposed method, and the method is also evaluated by comparing the results with ones from the existing method. The computation procedure proposed in this paper is very simple and efficient. Therefore, this method could be used for flight principle evaluation and flight simulators.