Two Dimension Numerical Simulation of Airflow over Complex Terrains at Low Altitude
In order to avoid the problems of existing methods,a numerical simulation method for two-dimensional airflow over complex terrains is developed in this paper for the engineering use of flight dynamics.Based an the potential flow theories,the effects of terrains on the wind field are considered by a serial of two-dimensional vortexes,whose strengths are solved by combining with the ground boundary conditions.Numerical examples are studied by the proposed method,and the method is also evaluted by comparing the results with ones from the existing method.The result shows that the two-dimensional profile of complex terrains could be described by a cubic spline curve precisely.The computation procedure proposed in this paper is very simple and efficient,and it could provide a result of wind field with considerable accuracy.Therefore,this method could be used for flight principle evaluation and flight simulators.Finally,through simulate flight path,discussing effect of terrains on track.
component complex terrains airflow over mountain cubic spline, potential flow theory style
Chu Tang Huanran Hu Guanxin Hong
School of Aeronautics Science and Engineering, Beihang University, 100191, China
国际会议
太原
英文
587-591
2012-12-08（万方平台首次上网日期，不代表论文的发表时间）