Analogue Simulation Research on Heating Characteristics of Inner Channel of High-temperature Gas Flow

Abstract

The thermal test of structure generally uses the quartz lamp radiation heating method, but this method is not suitable for heating of the internal surface of a long and narrow irregular channel. This paper puts forward a heating method of inletting the high-temperature gas flow to the channel, and uses CFD numerical simulation method to explore the internal surface temperature rise and temperature distribution conditions of the channel at different temperature and under the impact of Mach number of gas flow and verify the heating capacity of high-temperature gas flow, and also gives out Mach number of the best incoming flow when the total temperature ability of the high-temperature gas tunnel can obtain the highest wall temperature under certain conditions, thus providing a theoretical basis for reasonable determination of the best operating conditions for test.