Numerical analysis on flow properties in convergent – Divergent nozzle for different divergence angle

Abstract

Abstract Nozzle is a device in which pressure energy is converted in to kinetic energy and this supersonic nozzle can be used for different application includes aerospace, materials science, automobile many more. Present study involves study of flow parameter of a supersonic nozzle for different divergent angle. Convergent area is assumed be a constant but in divergent section area is changing with respect to divergence angle. Flow parameter is observed for the different divergence angle and they are Mach number, static pressure, velocity, turbulent kinetic energy, the diverge angle is used for the 9°, 11°, 13°.In the present study, a CFD code ANSYS, FLUENT software has been adopted for analyzing flow through Convergent-Divergent Nozzle. Quantitative data on pressure, velocity magnitude and Mach number are also presented in this study. The study has been demonstrated that a validated CFD methodology can be used to accurately predict the performance characteristics of Convergent-Divergent Nozzle even under non-standard conditions. In this work, the commercial finite-volume based code FLUENT is used to evaluate the Pressure, velocity, Mach number of Convergent-Divergent Nozzle with divergent angles 9°, 11°, 13°. Compressible-Transient state analysis are conducted in two-dimensional domains discretized with ICEM CFD. Creation of two-dimensional geometry of the Divergent section of CD Nozzle and ICEM CFD mesh is done on Workbench of ANSYS 15®. Simulation of expansion is carried on ANSYS FLUENT 15® software using different levels grid refinement.