Review of Computational Fluid Dynamics Studies on Jets
Review of Computational Fluid Dynamics Studies on Jets
复制标题
射流计算流体动力学研究综述
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
G. Humrutha
中科院分区：
文献类型：
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作者：
M. Kaushik;Rakesh Kumar;G. Humrutha
本文回顾了近五十多年来CFD的研究成果，以了解无控喷流和受控喷流的特性。回顾了喷流研究的时间演变，但它们是根据它们在讨论中的相关性而提出的。这项研究还强调了在自由射流的真实模拟中自适应湍流模型所涉及的复杂性。这些复杂性在很大程度上是由于射流的卷吸，亚音速射流在低雷诺数时存在大的扰动，以及从收敛-发散喷嘴以超音速马赫数喷出的射流中的强波相互作用。在CFD分析中，准确捕捉射流中的这些扰动、激波单元结构是一个真正的挑战。在超音速射流中准确捕捉激波和膨胀波的复杂性是模拟的关键步骤。
The present work reviews the CFD studies carried out in the last more than fifty years to understand the uncontrolled and controlled jet characteristics. The chronological evolution of investigations on jets are reviewed, however they are presented according to their relevance in the discussion. The study also highlights the complexities involved in adaptive turbulence models in a realistic simulation of free jets. These complexities are largely due to entrainment of jets, large perturbations present at low Reynolds numbers in subsonic jets and strong wave interactions in jets exiting at supersonic Mach numbers from convergent-divergent nozzles. The accurate capturing of these perturbations, shock-cell structures in jets poses a real challenge in the CFD analysis. The complexities of capturing shock and expansion waves accurately in supersonic jets, is the critical step in the simulation.