Fluid Dynamics Research for Nozzle Flow with the Computational Fluid Dynamics

Abstract

Abstract Nozzle is a kind of fluid equipment with a wide range of applications. Research on the internal flow of the nozzle is very important for improving the performance of the nozzle or improving the design of the nozzle. In this study, the flow conditions in the convergent-divergent nozzle, as well as the convergent or divergent nozzles are solved and explored by numerical simulations based on Euler equations. It is found that the fluid Mach number is affected by many factors. With the increase of the density, temperature, and pressure, the fluid Mach number will decrease. In the study of the nozzle shape, a discovery for the nozzle flow rate is that the change of the physical parameters of the fluid will fluctuate due to the increase of the cross-sectional area, and specifically it will slow down this change.