Follow-up proposal: Numerical investigations of compressibleturbulent boundary layers with pressure gradients and heat transfer

后续提案：具有压力梯度和传热的可压缩湍流边界层的数值研究

• 批准号: 441996000
• 负责人: Dr.-Ing. Christoph Wenzel
• 金额: --
• 依托单位: Institut für Aerodynamik und Gasdynamik (IAG)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/441996000?language=en
• 关键词: Follow; up; proposal; Numerical; investigations

In this follow-up project, a systematic understanding of the combined influences of pressure gradient and strong heat transfer in compressible turbulent boundary layers should be gained for the first time. To this end, data from Direct Numerical Simulations will be computed and analyzed for self-similar compressible turbulent boundary layers with and without pressure gradients and strong heat transfer on a high performance computer system, yielding insightful data that are not affected by a potentially inappropriate turbulence model. Thus, this proposal is a direct extension of the previous proposal, which focused on compressible turbulent boundary layers with pressure gradients and mild heat transfer. Among other things, this study will allow us to verify the validity of the main assumptions made in the derivation of the (strong) Reynolds analogy, which are known to be only partially valid for cases with strong heat transfer and not for turbulent boundary layers with pressure gradients. The result of this work thus significantly contributes to our fundamental understanding of how a compressible turbulent boundary layer is expected to principally behave in complex and thus realistic flow environments.

在该后续项目中，应首次对可压缩湍流边界层中压力梯度和强换热的综合影响有一个系统的认识。为此，来自直接数值模拟的数据将在高性能计算机系统上对具有和不具有压力梯度和强换热的自相似可压缩湍流边界层进行计算和分析，从而产生不受潜在不适当湍流模型影响的有洞察力的数据。因此，该建议是对先前建议的直接扩展，该建议侧重于具有压力梯度和温和换热的可压缩湍流边界层。在其他方面，这项研究将使我们能够验证在推导(强)雷诺类比时所做的主要假设的有效性，这些假设仅在具有强换热的情况下部分有效，而对于具有压力梯度的湍流边界层则不适用。因此，这项工作的结果有助于我们从根本上理解可压缩湍流边界层在复杂的、因此是现实的流动环境中的主要行为。