合理设计装载机冷却风扇导流罩的形状,可以减少流场紊流,降低噪声。对装载机常见冷却风扇导流罩进行了三维实体建模,并对导流罩内的流场进行仿真分析和计算。在仿真和计算的基础上,提出了两种导流罩改进方案。根据理论计算,改进设计后的导流罩能够有效地降低空气动力噪声辐射。 Reasonable design of the shape of the loader cooling fan shroud can reduce the turbulence of the flow field and reduce the noise. The three-dimensional solid modeling of the common cooling fan shroud of loader was carried out, and the flow field in the shroud was simulated and analyzed. On the basis of simulation and calculation, two kinds of improved schemes of the shroud are proposed. According to theoretical calculation, improving the design of the shroud can effectively reduce the aerodynamic noise radiation.