Cowl Deflection Angle in a Supersonic Air Intake

  • S. Das Birla Institute of Technology, Ranchi
Keywords: Cowl deflection, cowl deflection angle, supersonic air-intake, numerical simulation


A numerical study for a two-dimensional mixed compression supersonic air intake with different cowl deflections has been made with and without back pressure. Numerical simulations have been made with RANS solver using a k-w turbulence model. Overall flow field existing inside intake has been captured which indicates the change in flow field with cowl deflection angle. Overall performance has been obtained. Computations have been also made with bleed. The computed data are compared with available experimental and numerical results and indicated a good comparison. Results obtained through the present series of computation indicate an improvement in performance with small cowl deflection which is comparable to performance with  2.8 per cent bleed.
Defence Science Journal, 2009, 59(2), pp.99-105, DOI:

Author Biography

S. Das, Birla Institute of Technology, Ranchi
Birla Institute of Technology, Mesra, Ranchi–835 215
How to Cite
Das, S. (2009). Cowl Deflection Angle in a Supersonic Air Intake. Defence Science Journal, 59(2), 99-105.
Research Papers