Abstract
A supersonic nozzle converts pressure energy into kinetic energy of the fluid. It is vital to develop a nozzle based on kinetic energy change. In this study, the constant rate of kinetic energy change (CRKEC) approach has been developed for real fluid and utilized to compute nozzle profile and flow parameters. A MATLAB program was developed to compute the geometrical coordinates, fluid flow properties, and the nozzle at small steps (say 0.5 mm). The computational fluid dynamics (CFD) simulation used ANSYS-Fluent 14.0 on computed geometry. The variable area nozzle simulated results have been validated with 1D computed results. It has been found that the flow parameters such as Mach number, pressure, and temperature are in good agreement with each other with slight deviations. This approach is expected to help reduce loss due to shock compared to the conventional nozzle.
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