Fabrication and Flow Simulation of a Choked Flow Converging Nozzle

This paper describes about the design, fabrication and flow simulation of a choked flow nozzle which is used to supply constant mass flow rate to the air heater which can provide supersonic conditions for Supersonic Engine Test Facilities. The test facility is considered to be capable of delivering working gas at 5-20 kg/s flow rate, stagnation temperature at 800-2200 K and stagnation pressure at 8-40 bar to the inlet of combustion chamber of the engine for specified duration. The outlet condition for the choked nozzle is considered to be known and the required inlet pressure for the nozzle has to be found out. This converging nozzle should be capable of providing constant mass flow rate.