IJSRD - International Journal for Scientific Research & Development| Vol. 4, Issue 11, 2017 | ISSN (online): 2321-0613 All rights reserved by www.ijsrd.com 553 Modelling and Simulation of Supersonic Nozzle using ANSYS Workbench with New Measuring Data Jyoti Kumari 1 C. S. Koli 2 1 M. Tech Scholar 2 Assistant Professor 1,2 Department of Mechanical Engineering 1,2 SRCEM Banmore Abstract— This paper deals with modelling and simulation of supersonic nozzle using computational dynamics. We are considering the C-D (convergent-divergent) nozzle and analysis of supersonic nozzle by changing the parameters which are presently uses in the rocket have been conducted. Study also focused on discussing about the material using at the time of manufacturing of nozzle. First axisymmetric nozzle geometries were drawn on design modeller of ANSYS then analysis has done using fluent. The heat transfer rate of the outer wall and inner wall of the nozzle has been calculated and compared for various nozzle configurations. Static Pressure contours of various nozzle configurations have been plotted. Velocity and Mach number contours of various nozzle configurations have also been plotted. Graph of Mach number and heat transfer coefficient has also shown. After comparing the results it has observed by the contours that, nozzle with greater expansion gives high heat transfer coefficient compared to the conical nozzle. Parameters and laminar models considered in the study were found to give results which agreed with experiment and analytical data. Key words: Quality Function Deployment; Supersonic Nozzle I. INTRODUCTION Basically the nozzle used to modify the flow of fluid. We considered CD types of nozzles, in which flow velocity much higher that sonic velocity and these types of nozzle are used in propelling nozzles are used in jet engines, Specially this supersonic nozzle are used in rockets (for providing sufficient trust to move upwards). They also used in supersonic gas turbine engine (for increasing the air intake when air requirement of engine is very high). The main purpose of this article is to find out the effects and output of fluid flow while change the parameter of supersonic nozzle using ANSYS CFD. In convergent divergent nozzle, when fluid is flowing in nozzle then continuous changes in the flowing stream occur are,  Changes the cross sectional area  Wall friction  Energy friction, such as external heat exchange, etc. Now we compare and study about the different parameter of CD nozzle. In the design of convergent- divergent nozzle the relation is obtained from the area velocity relation (dA/dV) = - (A/V) (1-M²) Where M is Mach number, A is cross-sectional area, v is velocity or speed of fluid flow. Fig. 1: Nozzle In above figure 1 we can observe different things: A. In converging sections (dA<0)  When flow is subsonic (M<1→ (1-M²)>0); speed increases (dv>0); Mach number increases (M>0); but pressure and temperature decreases.  When flow is supersonic ((M>1) →1-M²)>0); speed decreases (dv<0); Mach number decreases (M<0); but pressure and temperature increases. B. In diverging section (dA>0)  When flow is subsonic (M<1→ (1-M²)>0); speed decreases (dv<0); Mach number decreases (M<0); but pressure and temperature increases.  When flow is supersonic ((M>1) →1-M²)>0); speed increases (dv>0); Mach number increases (M>0); but pressure and temperature decreases. II. MODELLING The model of supersonic nozzle is created in ANSYS WORKBENCH. In the modelling we give parameter for designing the model (nozzle), we also make the nozzle symmetric for maintaining the continuity equation as discuss above. Fig. 2: Geometry of the nozzle Table 1 Design parameter of convergent- divergent nozzle Inlet diameter 20 mm Outlet diameter 30 mm Throat diameter 10 mm Length 100 mm Pressure 2 bar Ideal gas viscosity Sutherland Table 1: Modelling