To understand different heat transfer characteristics of regenerative cooling in plug nozzle in different operation conditions
computational model of three dimension plug nozzle was established and numerical simulation was employed.Pressure
heat flux and temperature contour in different operation conditions were obtained.Governing equations were discretized with one order upstream scheme.The results show:at lower pressure ratio
heat transfer condition on the plug surface is the worst
peak values of pressure and temperature appear along the wall of plug nozzle
temperature and temperature gradient along the section of wall reach the highest.