شبیه سازی شبه استاتیک فرایند جدایش در موشکهای چند مرحله ای
نویسنده
چکیده
واژگان کلیدی : فاز جدایش موشک، اندرکنش جت تزریق، روش TVD و مسئله ریمان
کلیدواژهها
عنوان مقاله [English]
Quasi-Static Numerical Simulation of Missile Staging
نویسنده [English]
- A. R. Pishehvar and H. Ahmadi Kia
In this study, the missile staging process by implementing a side-injected jet is simulated numerically. The problem is considered to be axisymmetric and the thin shear layer approximation of Navier-Stokes equations along with an algebraic turbulence model is used in a quasi-static form for the calculations. The free stream corresponds to a very high altitude flight condition with a Mach number of 10 and an injected jet pressure ratio of about 63000. An explicit Godunov-type scheme is used in the calculations, which is second-order in time and space. Computations are performed on the attached and separated geometry for a range of distances between the body and the warhead. The intense interactions between the jet flow and the main free-stream and its overall influences on the warhead aerodynamic loading are finally demonstrated.
Keywords: Missile Staging, Jet Interaction flow, TVD Scheme, Riemann problem
کلیدواژهها [English]
- Missile Staging
- Jet Interaction flow
- TVD Scheme
- Riemann problem
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