화염배출 출구면적 변화에 대한 수직발사관 내부 초음속 충돌유동의 수치적 해석

NUMERICAL INVESTIGATIONS OF SUPERSONIC JET IMPINGEMENT ON A FLAT WALL IN A CONFINED PLENUM

Viscous solutions of supersonic jet impinging on a flat wall in a confined plenum are simulated using three-dimensional Navier-Stokes solver. A confined plenum was designed for simulating the missile launch and analyzing the behavior of the exhaust plume, which were accompanied by complex flow interactions with shock and boundary layer. Concerns of this paper are to show accurate simulation of internal flow in confined plenum and to demonstrate the jet flow structure when the jet interacts with a small opening on the side. Objectives of this numerical simulation are to understand the effect of changing the plume exit area of the plenum. Pressure and temperature rise at certain position in the plenum are traced and compared with test data.