ESTIMATING AERODYNAMIC EFFECT OF SPIKE SHAPE DURING THE FLIGHT OF A PROJECTILE USING COMPUTATIONAL FLUID DYNAMICS

A CFD analysis is carried out to determine the best spike shape to minimize the drag of blunt-nosed bodies (blunt nosed missiles) and determine the aerodynamic coefficients (lift, drag, and pitching moment coefficient as well as the location of center of pressure) of blunt bodies with four different spike shapes. Compare The CFD results with Experimental results. This article mainly focuses on estimating the aerodynamic effect of the spike shape during the flight of a projectile using the Computational fluid dynamics. Analysis of supersonic flow over blunt bodies is carried out in order to study in detail the flow structure and wave structures in the vicinity of shock waves and expansion waves, for the purpose of understanding the salient physics and eventually modeling the flow instabilities downstream of the shock.