Numerical investigation of wall heat transfer influence on shock train in Scramjet isolator

Abstract eng:
Due to the scramjet isolator suffering from the severe aeroheating problem at a long time fly, this paper studied the influence of wall heat transfer on flow characteristics and performance of a scramjet isolator by numerical simulation. The results show that shock train is affected by the dual mechanism of isolator wall temperature and airflow total temperature. Shock train length increases with ratio of wall temperature to total temperature. To predict shock train length of practical design with more accuracy, the parameter involved wall heat transfer is introduced to improve Waltrup and Billig correlation [1].

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