The Optimization Of Wind Tunnel Simulative System On Wind Speed Contour Line Of Typical Wind Erosive Ground Surface

The paper used fluent, a software of Computational Fluid Dynamics, to simulate the wind-tunnel indoor test in numerical. The test simulated wind speed contour line of cropland without vegetation. It established the 3D model of wind-tunnel indoor test and the parameters needed in numerical simulation on the software. It successfully simulated the wind velocity flowing situation of wind-tunnel indoor test and the wind speed contour line which we needed. Secondly, it successfully optimized the wind tunnel simulative system which used the stick grid, steeple, barrier and rough unit to simulate the near ground boundary flow of atmospheric boundary layer, and then debugged the wind speed contour line of six typical ground surface (cropland without vegetation, bareness cropland, cropland with stubble, sandlot, cropland with vegetation, grassland). At the end of this article researched the function and the rule of the stick grid, steeple, barrier and rough unit in the wind-tunnel indoor test.