Computational investigation of drag reduction on a large blunt Cone-Flare body in hypersonic turbulent flow using a Counter-Flow jet at various angle of attack

The large blunt-nosed body is a common shape used in the design of hypersonic vehicles. The angle of attack (α) in these vehicles introduces several challenges that can significantly affect performance. The primary issues caused by α in hypersonic vehicles include increased drag, thermal loads, flow separation, structural stress, control and stability difficulties, and complex shock wave interactions. Controlling α is critical for optimizing performance and preventing damage or failure during re-entry or high-speed manoeuvres. The current effort intends to minimise drag for a large blunt cone-flare body in hypersonic turbulent flow by maximising the angle of attack with a counter-flow jet. The massive blunt cone-flare body was simulated and the hypersonic flow conditions were set. The axisymmetric Navier-Stokes equations were numerically analysed using the shear stress transport model. Total drag, skin friction drag, and pressure drag were measured with and without the jet. Contours of Mach number and temperature were analyzed to describe the flow pattern. Optimal jet conditions for drag mitigation were identified.

کلیدواژه ها:

Drag ، Jet ، Large Blunt Cone Flare Body ، angle of attack