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The influence of upstream wavy surface on the mixing zone of the transverse hydrogen jet at supersonic free stream

机译：超声自由流上游波浪表面对横向氢射流混合区的影响

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In this study, the computational fluid dynamic is applied to investigate the impact of the upstream wavy surface on the mixing rate of the hydrogen fuel jet. The flow feature analyses are also performed to disclose the man influence of the upstream wavy surface on the mixing zone and fuel penetration in the downstream of the jet. To simulate the jet interaction with supersonic free stream, Navier-Stokes equations are coupled with conservation equations of energy and species equation. Since the interaction of the transverse fuel jet with a supersonic mainstream is a complex, a three-dimensional model with high resolution is produced for our investigations. The impact of the supersonic Mach number on the efficiency of the fuel mixing in the presence of the sinusoidal wavy surface. Comprehensive parametric studies are done to reveal the influence of the jet pressure and wavy profile on the mixing performance in the downstream of the jet. According to obtained results, the mixing rate of the fuel in the downstream increases more than 35% when the free stream Mach number is increased from 2 to 4. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译：在这项研究中，应用计算流体动力学来研究上游波浪表面对氢燃料射流混合速率的影响。还进行了流动特征分析，以揭示上游波状表面对混合区的人为影响以及燃料在射流下游的渗透。为了模拟射流与超音速自由流的相互作用，将Navier-Stokes方程与能量守恒方程和物种方程耦合在一起。由于横向燃料射流与超音速主流之间的相互作用很复杂，因此为我们的研究生成了具有高分辨率的三维模型。在存在正弦波状波浪表面的情况下，超声速马赫数对燃料混合效率的影响。进行了全面的参数研究，以揭示射流压力和波浪形轮廓对射流下游混合性能的影响。根据获得的结果，当自由流马赫数从2增加到4时，下游燃料的混合速率增加35％以上。（C）2019 Elsevier Masson SAS。版权所有。

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