Research on Modelling and Simulation Method of Low Pressure and Temperature Environment Chamber

This paper provides modelling and simulation method for low pressure and temperature environment chamber. The environment chamber internal air-flow organization with air deflector and anisotropic damping plate are calculated and optimized. The results show that under the condition of low pressure, adopting the above airflow organization control method can ensure that the temperature difference of the core area is less than 1 degree. At the same time, a preliminary analysis of the environmental chamber loaded with test parts is carried out. The flow field and temperature field in the environmental chamber are greatly affected by large size test pieces. In order to keep the temperature uniform, the wind speed in the test section should be adjusted according to the test pieces. The results show that the method of the temperature uniform optimization is effective. The results in this paper have a certain reference value for the design of large environmental chambers.