In order to solve the problem that the uneven airflowwill appear in the lowprofile cross ventilated( LPCV) cowbarn during the actual operation,a method of changing the tilt angle of wind deflector at the upper part of the cowbarn was proposed to improve the air uniformity in the cowbarn. With the fluent software,the 3D model for the cowbarn with different angles between the wind deflector and vertical direction was established,and the fan and wet curtain were set as the boundary conditions. With the computa...