Abstract: Plateau environment is peculiar, such as high altitude, low temperature, and low atmospheric pressure. The air filters for the traditional heavy armored vehicles are designed according to the atmospheric environment and air density of plain area. In order to ensure that a product meets the use requirements in plateau environment, the working performance of air filter must be predicted. An air filter virtual prototype model of a heavy engineering vehicle is established based on computational fluid dynamics algorithm. The model is optimized to predict the performance of air filter in a different environment. The system performance test of air filter is conducted based on the theoretical research conclusions. The test and simulation results show that the predicted result of virtual model has good consistency with the experimental conclusion.

Key words: ordnance science and technology, plateau, air filter, virtual prototype, simulation, porous media, test