首页> 外文会议>30th AIAA/ASME/SAE/ASEE Joint Propulsion Conference June 27-29, 1994/Indianapolis, IN >Numerical simulation of Hypersonic Shock-Induced Combustion Ramjet Flowfields
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Numerical simulation of Hypersonic Shock-Induced Combustion Ramjet Flowfields

机译:高超声速冲击诱导燃烧冲压发动机流场的数值模拟

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Much research in the field of hypersonic propulsion is being carried out, and one mode of propulsion, viable especially for higher Mach numbers, is the shock-induced combustion ramjet (shcramjet). To resolve the shcramjet flowfield, a lower-upper symmetric successive overrelaxation (LUSSOR) scheme has been used to solve the Euler equations (axisymmetric or planar) for steady-state flow. The shock-induced finite-rate hydrogen-air combustion process was modeled by 33 reactions between 13 species (H_2, O_2, H, O, OH, H_2O, H_2O_2, N, NO, HNO, N_2, NO_2). The pressure distribution acting on these axisymmetric bodies was determined and used to obtain various aerodynamic and propulsive characteristics of external compression ramjets over the range of flight Mach numbers 10 <= M_infinity <=18. In conjunction with this research, a detailed numerical study of the non-equilibrium shock-induced combustion flowfield generated by a wedge-like body has been performed.
机译:高超声速推进领域中的许多研究正在进行中,一种冲击诱导的燃烧冲压发动机(shcramjet)是一种特别适用于更高马赫数的推进模式。为了解决shcramjet流场,已使用较低的上对称连续超松弛(LUSSOR)方案来求解稳态流动的Euler方程(轴对称或平面)。冲击诱导的有限速率氢气-空气燃烧过程是通过13种物质(H_2,O_2,H,O,OH,H_2O,H_2O_2,N,NO,HNO,N_2,NO_2)之间的33个反应进行建模的。确定了作用在这些轴对称物体上的压力分布,并将其用于在飞行马赫数10 <= M_infinity <= 18的范围内获得外部压缩冲压喷气发动机的各种空气动力学和推进特性。结合这项研究,对楔形物体产生的非平衡冲击引起的燃烧流场进行了详细的数值研究。

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