Thermal simulations and experimental validation for the induction of indigenously developed copper alloy in regeneratively cooled Cryogenic vernier engines

Thermal simulations are carried out using a 1-D heat transfer code developed specifically for the vernier engine. Fin conduction through ribs is modelled as two dimensional. By means of simulations, engine required to obtain the maximum possible safe thermal operating conditions of engine are arrived at. The temperature distribution is evolved for this condition. Experimental validation is done by subjecting the engine to a 1060s endurance hot test. Coolant channel exit temperature estimated from the test closely matches with thermal simulations. With the theoretical simulation and experimental validation, thermal and structural integrity of copper alloy is validated and is successfully inducted into vernier engines for flight operation.