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Correlation-Based Transition Modeling for Unstructured Parallelized Computational Fluid Dynamics Codes

机译：非结构化并行计算流体力学代码的基于相关的过渡建模

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摘要

A new correlation-based transition model has been developed, which is built strictly on local variables. As a result, the transition model is compatible with modern computational fluid dynamics techniques such as unstructured grids and massively parallel execution. The model is based on two transport equations, one for intermittency and one for a transition onset criterion in terms of momentum-thickness Reynolds number. A number of validation papers have been published on the basic formulation of the model. However, until now the full model correlations have not been published. The main goal of the present paper is to publish the full model and release it to the research community so that it can continue to be further validated and possibly extended or improved. Included in this paper are a number of test cases that can be used to validate the implementation of the model in a given computational fluid dynamics code. The authors believe that the current formulation is a significant step forward in engineering transition modeling, as it allows the combination of transition correlations with general-purpose computational fluid dynamics codes. There is a strong potential that the model will allow the first-order effects of transition to be included in everyday industrial computational fluid dynamics simulations.
机译：已经开发了一种新的基于相关的过渡模型，该模型严格建立在局部变量的基础上。结果，过渡模型与现代计算流体动力学技术兼容，例如非结构化网格和大规模并行执行。该模型基于两个运输方程，一个用于间歇性，一个用于以动量厚度雷诺数表示的过渡起始标准。关于该模型的基本公式，已经发表了许多验证文件。但是，到目前为止，尚未发布完整的模型相关性。本文的主要目标是发布完整模型并将其发布给研究社区，以便可以继续对其进行进一步验证，并可能对其进行扩展或改进。本文包括许多测试案例，可用于验证给定计算流体动力学代码中模型的实现。作者认为，当前公式是工程过渡建模中的重要一步，因为它可以将过渡相关性与通用计算流体动力学代码结合起来。该模型具有很大的潜力，可以将过渡的一阶效应包含在日常工业计算流体动力学模拟中。

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