精品文档---下载后可任意编辑超音速尖锥/钝锥边界层稳定性、转捩及湍流的讨论的开题报告摘要：超音速尖锥/钝锥边界层稳定性、转捩及湍流的讨论一直是气动力学领域的一个热点。本文讨论目的是探究超音速尖锥/钝锥边界层在不同条件下的稳定性、转捩和湍流现象，并建立相关数值模型。首先对文献进行综述，分析不同讨论结果的异同。其次，运用流场分析方法，建立基于 K-ω SST 湍流模型的计算模型，并进行边界条件以及网格优化等改进。最后，进行实验验证，分析结果与计算模型的差异，并对未来讨论进行展望。关键词：超音速尖锥/钝锥、边界层稳定性、转捩、湍流模型、流场分析Abstract: The stability, transition and turbulence of the boundary layer of supersonic sharp cone/blunt cone have been a hot topic in the field of aerodynamics. The purpose of this study is to explore the stability, transition and turbulence phenomena of the boundary layer of supersonic sharp cone/blunt cone under different conditions, and to establish relevant numerical models. Firstly, the literature is reviewed to analyze the similarities and differences of different research results. Secondly, the flow field analysis method is used to establish a calculation model based on the K-ω SST turbulence model, and the boundary conditions and grid optimization are improved. Finally, experimental verification is carried out to analyze the differences between the results and the calculation model, and the future research is prospected.Keywords: Supersonic sharp cone/blunt cone, boundary layer stability, transition, turbulence model, flow field analysis.
