Design and Simulation of a Water-Cooling Jacket System for High Heat Flux Applications

In recent years, high heat flux cooling techniques have received great attention from researchers around the world. In this paper, we report on the design of a water jacket cooling system for second throat type supersonic exhaust diffuser for simulation altitude testing of chemical rocket engines. Water-jacket cooling is a secure and liable method of cooling in many applications like DC engines, rocket engines, hypersonic wind tunnel facilities, and supersonic diffuser vacuum stands implemented in the simulation of rocket engines at high altitude, where the surrounding environment is at a low-pressure level. In order to design a water jacket cooling system with high heat flux, it is necessary to first identify the key parameters and evaluate each one. Then, some important parameters such as the material of the wall structure or type of cooling fluid are considered as fixed values and then the required studies are performed on the geometric parameters, operating conditions, pressure drop and etc. In this study, the effect of geometry (aspect ratio) and pressure loss on cooling efficiency are investigated in terms of the maximum heat flux around the wall and coolant. Numerical predictions presented in this work clearly illustrate the significance of the water jacket cooling technique employed for second throat type supersonic exhaust diffuser for simulation altitude testing of chemical rocket engines

کلیدواژه ها:

high heat flux ، cooling system ، water jacket ، heat transfer.