Simulation Model and Verification of Heat Transfer Characteristics in Aircraft Cabin Bulkhead

Abstract

The calculation of heat transfer in aircraft bulkheads is of vital importance to the design of aircraft cabins. In this paper, a numerical model for the fluid-solid coupled heat transfer of aircraft cabin bulkhead and air in the cabin is developed, including fluid/solid area division, network strategy, turbulence model and numerical discrete method, and the model is verified based on the experimental data. The results show that the proposed model can accurately predict the wall temperature and the air temperature of the aircraft cabin with a deviation of less than 1.02°C in the working range of -15∼25°C, and the prediction deviation for the air velocity is within ±10%. The heat transfer from the cabin to the bulkhead accounts for 7.5% of the total heat transfer. The main component of the thermal resistance of the cabin bulkhead is the thicker solid area, and the inlet air temperature is the key parameter for the design of aircraft cabin. The research results provide an important theoretical basis for the optimal design of the thermal environment of the aircraft cabin.