Experimental Study of Heat Flux in the Pseudo-shock Region

Abstract

The prediction method for heat flux in the pseudo-shock region is improved based on data measurements taken during ramjet-mode experiments. Combustion experiments using a ramjet-mode combustor are conducted to investigate heat flux in the pseudo-shock region. The heat flux is measured in the region with and without combustion. The heat transfer coefficient is modified using the Stanton number and specific heat under combustion. Using modified coefficients, the modified heat transfer coefficient ratios show the same relation to the pressure ratios as those without combustion. The ratio of heat transfer coefficients is calculated using a single equation. The calculation method can predict the experimental results of heat flux in the pseudo-shock region with combustion in the divergent duct.