计算物理 ›› 2024, Vol. 41 ›› Issue (6): 732-745.DOI: 10.19596/j.cnki.1001-246x.8904

• 论文 • 上一篇    下一篇

面向工程应用的流体界面失稳湍流混合问题建模进展

肖梦娟1,2(), 谢寒松3, 宾远为4, 张又升1,2,3,*()   

  1. 1. 北京应用物理与计算数学研究所, 北京 100094
    2. 计算物理全国重点实验室, 北京 100088
    3. 北京大学应用物理与技术研究中心, 北京 100871
    4. 北京大学工学院湍流与复杂系统国家重点实验室, 北京 100871
  • 收稿日期:2024-01-26 出版日期:2024-11-25 发布日期:2024-12-26
  • 通讯作者: 张又升
  • 作者简介:

    肖梦娟, 女, 博士, 副研究员, 硕士生导师, 研究方向为流动不稳定性与湍流, E-mail:

  • 基金资助:
    国家自然科学基金项目(12222203); 国家自然科学基金项目(12002059)

Progress in Modeling Turbulent Mixing Inudced by Interfacial Instabilities for Engineering Applications

Mengjuan XIAO1,2(), Hansong XIE3, Yuanwei BIN4, Yousheng ZHANG1,2,3,*()   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
    2. National Key Laboratory of Computational Physics, Beijing 100088, China
    3. Center for Applied Physics and Technology, Peking University, Beijing 100871, China
    4. State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China
  • Received:2024-01-26 Online:2024-11-25 Published:2024-12-26
  • Contact: Yousheng ZHANG

摘要:

流体力学界面不稳定性诱导的湍流混合现象广泛存在于各类自然现象和工程问题中。特别地, 在工程流动问题中, 一般涉及的是复杂初始扰动诱导下的湍流混合问题。这类混合问题往往多混合机制共存、主控参数宽泛剧烈变化。准确预测这些复杂性下混合区时空演化对于工程实践至关重要, 雷诺平均Navier-Stokes (RANS)和大涡模拟(LES)是工程应用最为可行的数值模拟方法。但是, 现有RANS和LES建模面临难以统一预测各类混合问题等工程应用的难点。本文从工程应用视角, 综述目前在RANS和LES建模方面的认识、存在的问题, 以及团队的最新研究进展。

关键词: 界面不稳定性, 湍流混合, 雷诺平均Navier-Stokes模型, 大涡模拟模型

Abstract:

Turbulent mixing induced by interfacial instabilities widely exists in various natural phenomena and engineering problems. Specifically, in typical engineering flows, involved turbulent mixing problems are usually triggered by intricate initial perturbations. This type of mixing problems often has various complexities such as coexistence of multiple mixing mechanisms, multi-stage continuous evolution, and wide and drastic changes in main control parameters. Accurately predicting the spatiotemporal evolution of mixing zone under the aforementioned complexity is crucial for engineering applications. In the current and foreseeable future, Reynolds-Averaged Navier-Stokes (RANS) and large eddy simulation (LES) modeling are the most feasible numerical methods. However, existing RANS and LES models face key challenges which must overcome, such as difficulty in uniformly predicting various mixing problems. This review will focus on these issues, standing from the perspective of engineering application, and provide a detailed overview of the latest understanding and existing problems of RANS and LES modeling among academic peers, as well as ours' recent progress.

Key words: interfacial instabilities, turbulent mixing, Reynolds-averaged Navier-stokes model, large eddy simulation model