OPTIMIZATION FLOW ANALYSIS OF SUPERSONIC NOZZLE USIING CFD

A Nozzle is a device which is used to control the fluid flow and directions. The design is considered based on the pipe cross sectional area & length of the pipe. It is used for converting the pressure energy into kinetic energy. Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape and the pressure of the stream that emerges from them. A convergent divergent nozzle with a variable area and profile through which the relative airflow is supersonic is known as supersonic nozzle. The expansion of supersonic flow causes the static pressure and temperature to decrease from the throat to the exit, so the amount of the expansion also determines the exit pressure and temperature. Computational Fluid Dynamics (CFD) is used for flow analysis of the nozzle. Thermal analysis and flow analysis are done using CFD. Boundary conditions like pressure and temperature are applied on the nozzle. As supersonic nozzle has wide variety of applications it is necessary to optimize the flowthrough a supersonic nozzle with minimum losses. By CFD analysis of supersonic nozzle high concentration of stress, strain and deformation of nozzle is observed. By thermal analysis expansion of high temperature area and deformation due to high temperature is observed. This analysis helps us to improve the nozzle design and to optimize the flow of the fluid through supersonic nozzle. Further, this helps in improvement of efficiency of supersonic nozzle.