{"title":"利用非线性达西-布林克曼-福克海默模型对多孔分隔空腔中的流场和温度场进行数值分析","authors":"","doi":"10.1016/j.enganabound.2024.105916","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, the effects of partitioning a square cavity with both vertical and horizontal porous walls on conjugate natural convection heat transfer are investigated numerically using a non-linear Darcy-Brinkman-Forchheimer model. The primary objective is to establish benchmark solutions and a dataset for validating Computational Fluid Dynamics (CFD) simulations. The governing equations, including mass, Navier-Stokes, and energy, are discretized using a staggered grid system based on the control volume method. To handle porous media, a FORTRAN code is developed based on the non-linear Darcy-Brinkman-Forchheimer model and initially validated against three challenging benchmark cases. These cases involve mixed and natural convection heat transfer in a square porous cavity, with and without a magnetic field. Through comparative analysis with existing data, the accuracy and robustness of the numerical model in capturing complex flow and heat transport phenomena in porous media are confirmed. Subsequently, the validated numerical model is applied to examine conjugate natural convection heat transfer in a square cavity partitioned with both vertical and horizontal porous matrices. In the final stage of the investigation, the influence of a magnetic field on the heat transfer rate within the partitioned enclosure is also explored. The results reveal significant impacts of the Darcy number and porous region orientation on the thermal and hydrodynamic characteristics of the system. Moreover, substantial variations in heat transfer rate and flow intensity within the computational domain are observed with decreasing the Darcy number and increasing Hartman numbers.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical analysis of flow and temperature fields in porous-partitioned cavities using non-linear Darcy-Brinkman-Forchheimer model\",\"authors\":\"\",\"doi\":\"10.1016/j.enganabound.2024.105916\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, the effects of partitioning a square cavity with both vertical and horizontal porous walls on conjugate natural convection heat transfer are investigated numerically using a non-linear Darcy-Brinkman-Forchheimer model. The primary objective is to establish benchmark solutions and a dataset for validating Computational Fluid Dynamics (CFD) simulations. The governing equations, including mass, Navier-Stokes, and energy, are discretized using a staggered grid system based on the control volume method. To handle porous media, a FORTRAN code is developed based on the non-linear Darcy-Brinkman-Forchheimer model and initially validated against three challenging benchmark cases. These cases involve mixed and natural convection heat transfer in a square porous cavity, with and without a magnetic field. Through comparative analysis with existing data, the accuracy and robustness of the numerical model in capturing complex flow and heat transport phenomena in porous media are confirmed. Subsequently, the validated numerical model is applied to examine conjugate natural convection heat transfer in a square cavity partitioned with both vertical and horizontal porous matrices. In the final stage of the investigation, the influence of a magnetic field on the heat transfer rate within the partitioned enclosure is also explored. The results reveal significant impacts of the Darcy number and porous region orientation on the thermal and hydrodynamic characteristics of the system. Moreover, substantial variations in heat transfer rate and flow intensity within the computational domain are observed with decreasing the Darcy number and increasing Hartman numbers.</p></div>\",\"PeriodicalId\":51039,\"journal\":{\"name\":\"Engineering Analysis with Boundary Elements\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Engineering Analysis with Boundary Elements\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0955799724003904\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Analysis with Boundary Elements","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955799724003904","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
Numerical analysis of flow and temperature fields in porous-partitioned cavities using non-linear Darcy-Brinkman-Forchheimer model
In this study, the effects of partitioning a square cavity with both vertical and horizontal porous walls on conjugate natural convection heat transfer are investigated numerically using a non-linear Darcy-Brinkman-Forchheimer model. The primary objective is to establish benchmark solutions and a dataset for validating Computational Fluid Dynamics (CFD) simulations. The governing equations, including mass, Navier-Stokes, and energy, are discretized using a staggered grid system based on the control volume method. To handle porous media, a FORTRAN code is developed based on the non-linear Darcy-Brinkman-Forchheimer model and initially validated against three challenging benchmark cases. These cases involve mixed and natural convection heat transfer in a square porous cavity, with and without a magnetic field. Through comparative analysis with existing data, the accuracy and robustness of the numerical model in capturing complex flow and heat transport phenomena in porous media are confirmed. Subsequently, the validated numerical model is applied to examine conjugate natural convection heat transfer in a square cavity partitioned with both vertical and horizontal porous matrices. In the final stage of the investigation, the influence of a magnetic field on the heat transfer rate within the partitioned enclosure is also explored. The results reveal significant impacts of the Darcy number and porous region orientation on the thermal and hydrodynamic characteristics of the system. Moreover, substantial variations in heat transfer rate and flow intensity within the computational domain are observed with decreasing the Darcy number and increasing Hartman numbers.
期刊介绍:
This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods.
Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness.
The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields.
In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research.
The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods
Fields Covered:
• Boundary Element Methods (BEM)
• Mesh Reduction Methods (MRM)
• Meshless Methods
• Integral Equations
• Applications of BEM/MRM in Engineering
• Numerical Methods related to BEM/MRM
• Computational Techniques
• Combination of Different Methods
• Advanced Formulations.