Lattice Boltzmann model combined with immersed boundary method for two-dimensional radiative heat transfer with irregular geometries

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2024-05-25 DOI:10.1016/j.ijthermalsci.2024.109170

Si Wu, Keyong Zhu, Xiaochuan Liu, Yong Huang

{"title":"Lattice Boltzmann model combined with immersed boundary method for two-dimensional radiative heat transfer with irregular geometries","authors":"Si Wu, Keyong Zhu, Xiaochuan Liu, Yong Huang","doi":"10.1016/j.ijthermalsci.2024.109170","DOIUrl":null,"url":null,"abstract":"<div><p>A complete lattice Boltzmann model combined with immersed boundary method (LB-IBM) is developed to address radiative heat transfer problem in irregularly shaped media. This method investigates radiative heat transfer in two-dimensional uniform/gradient refractive index media with various geometric shapes. The thermal effects generated by irregular boundaries are represented in the form of thermal density and interpolated onto adjacent lattices in the lattice Boltzmann model (LBM). Then, the four-point discrete delta function is used as the interface scheme of the immersed boundary method. Therefore, the standard LBM can effectively solve radiation problems in irregular geometries. The accuracy of the LB-IBM is validated through a comparative analysis with the results predicted by the finite volume method, embedded boundary method, and other numerical methods. Moreover, this paper promotes the application of LBM in radiative heat transfer in irregularly shaped media by providing a straightforward and efficient mesoscopic tool. This lays the foundation for establishing a framework of LBM for unified treatment of convection, conduction and thermal radiation.</p></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermal Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1290072924002928","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

A complete lattice Boltzmann model combined with immersed boundary method (LB-IBM) is developed to address radiative heat transfer problem in irregularly shaped media. This method investigates radiative heat transfer in two-dimensional uniform/gradient refractive index media with various geometric shapes. The thermal effects generated by irregular boundaries are represented in the form of thermal density and interpolated onto adjacent lattices in the lattice Boltzmann model (LBM). Then, the four-point discrete delta function is used as the interface scheme of the immersed boundary method. Therefore, the standard LBM can effectively solve radiation problems in irregular geometries. The accuracy of the LB-IBM is validated through a comparative analysis with the results predicted by the finite volume method, embedded boundary method, and other numerical methods. Moreover, this paper promotes the application of LBM in radiative heat transfer in irregularly shaped media by providing a straightforward and efficient mesoscopic tool. This lays the foundation for establishing a framework of LBM for unified treatment of convection, conduction and thermal radiation.

查看原文本刊更多论文

晶格玻尔兹曼模型与沉浸边界法相结合，用于不规则几何形状的二维辐射热传递

为解决不规则形状介质中的辐射传热问题，开发了一种结合沉浸边界法（LB-IBM）的完整晶格玻尔兹曼模型。该方法研究了具有各种几何形状的二维均匀/梯度折射率介质中的辐射传热问题。不规则边界产生的热效应以热密度的形式表示，并通过晶格玻尔兹曼模型（LBM）插值到相邻晶格上。然后，使用四点离散三角函数作为沉浸边界法的界面方案。因此，标准 LBM 可以有效地解决不规则几何形状中的辐射问题。通过与有限体积法、嵌入边界法和其他数值方法预测结果的对比分析，验证了 LB-IBM 的准确性。此外，本文通过提供一种简单高效的介观工具，促进了 LBM 在不规则形状介质辐射传热中的应用。这为建立统一处理对流、传导和热辐射的 LBM 框架奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.

文献相关原料

公司名称	产品信息	采购帮参考价格