基于扩展张量基的压力应变相关模型
A pressure strain correlation model employing extended tensor bases
摘要：
精确和鲁棒的压力应变相关模型是湍流模拟中雷诺应力模型成功的重要组成部分。然而，仅使用局部张量来复制压力的非局部作用对潜在的模型性能有很大的限制。在本文中，我们概述了一种方法，该方法扩展了张量基础上用于压力应变相关建模，制定模型，提高精度和鲁棒性。这组额外的张量进行了分析，并证明基于物理的参数和模拟数据的分析。利用这些张量模型的快速和缓慢的压力应变相关的发展。由此产生的完整的压力应变相关模型进行了测试，为各种各样的湍流，而建立的模型的预测进行对比。结果表明，新的模型提供了显着的提高预测精度。
英文摘要：
Accurate and robust models for the pressure strain correlation are an essential component for the success of Reynolds Stress Models in turbulent flow simulations. However replicating the non-local action of pressure using only local tensors places a large limitation on potential model performance. In this paper we outline an approach that extends the tensor basis used for pressure strain correlation modeling to formulate models with improved precision and robustness. This set of additional tensors is analyzed and justified based on physics based arguments and analysis of simulation data. Using these tensors models for the rapid and slow pressure strain correlation are developed. The resulting complete pressure strain correlation model is tested for a wide variety of turbulent flows, while being contrasted against the predictions of established models. It is shown that the new model provides significant improvement in prediction accuracy.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
