Burnback Analysis & CFD Simulation of Finocyl Grain in Solid Propellant Rocket Motor

Design and analysis of propellant grain configurations for determination of the grain geometry which is an important and critical step in the design of solid propellant rocket motors, because accurate calculation of grain geometrical properties plays a vital role in performance prediction. The performance prediction of the solid rocket motor can be achieved easily if the burn back steps of the grain are known. In this study, grain burnback analysis for 3-D grain geometries was investigated. The method used was solid modeling of the propellant grain for predefined intervals of burnback. In this method, the initial grain geometry was modeled parametrically using Creo parametric software. For every burn step, the parameters were adapted and the new grain geometry was modeled. By analyzing these geometries, burn area change of the grain geometry was obtained. CFD simulation of the core flow 3D grain of solid propellant rocket motor. And the field of SRMs various types of CFD models were used for simulation purpose. But in the present research work K-E standard Ansys fluent model used for simulation.