LAGRANGIAN TRANSPORT FORMALISM FOR UNDERSTANDING AND SOLVING THE TURBULENT CHANNEL FLOW PROBLEM

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow Pub Date : 2025-09-12 DOI:10.1016/j.ijheatfluidflow.2025.110049

T.-W. Lee, J.E. Park

引用次数: 0

Abstract

A direct solution for the turbulent channel flow problem is attempted, using a set of dynamical equations based on a Lagrangian transport formalism along with the Reynolds-averaged Navier-Stokes equation. The approach is based on the first principles of momentum and kinetic energy balance, derived for a control volume moving at the local mean velocity. The results are compared with DNS results by Lee and Moser (2015). In addition to providing a reasonably accurate mean velocity and Reynolds stress solutions, the method casts some insight on the origin of the dynamical structure in wall-bounded turbulent flows.

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理解和解决湍流通道流动问题的拉格朗日输运形式

利用一组基于拉格朗日输运形式的动力学方程和reynolds -average Navier-Stokes方程，尝试了紊流通道流动问题的直接解。该方法基于动量和动能平衡的第一原理，推导出以局部平均速度移动的控制体积。结果与Lee和Moser（2015）的DNS结果进行了比较。除了提供相当精确的平均速度和雷诺应力解外，该方法还对壁面湍流动力结构的起源有了一定的了解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Heat and Fluid Flow 工程技术-工程：机械

CiteScore

5.00

自引率

7.70%

发文量

131

审稿时长

33 days

期刊介绍： The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows. Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.