Analysis on a blunt cone with protrusion in hypersonic flow

Protrusions exist on the surfaces of almost all aerodynamic bodies. The protrusions can be due to fuel lines, electrical cables, control surfaces, rivets etc. Such protrusions induce aerodynamic and heating loads on the surface of the aerodynamic bodies. The hot spots are formed in the vicinity of these protrusions and proper thermal shielding needs to done on the surfaces. Experimental and numerical studies can identify these hot spots and their behaviour. In this work numerical analysis of a sharp and blunt cones with protrusions in hypersonic flow is carried out using commercial finite element package ANSYS. The numerical simulations are carried for different free stream conditions and different shapes of the protrusions. The protrusions used in this study are of trapezoidal, hexagonal and triangular shape. The analysis is mainly focusing on the pressure and the heat flux data because in hypersonic flow these two need serious attention. The results of three different protrusion models are taken and studied how the shape of protrusion effects the pressure and heat flux on the body and on protrusion.