{"title":"折流板高度和位置对折流板管道传热和流动特性的影响:CFD分析","authors":"A. Boonloi, W. Jedsadaratanachai","doi":"10.1155/2022/3698887","DOIUrl":null,"url":null,"abstract":"CFD analysis of flow and heat transfer characteristics in a baffled duct is reported. The baffle locations (\n \n s\n =\n 0.05\n H\n –\n 0.40\n H\n \n ), flow paths (V-apex directing Downstream or VD and V-apex directing Upstream or VU), and baffle heights (\n \n b\n =\n 0.05\n H\n –\n 0.30\n H\n \n ) are investigated in the laminar flow regime with the Reynolds number based on the entry conditions between 100 and 2,000. Solutions of the present work are obtained by the finite volume method (a commercial code). Key mechanisms such as fluid streams, impinging streams, and disturbed thermal boundary layer in the baffled duct are observed. The baffle locations have high impact on flow and heat transfer behavior. The best heat transfer rate of the baffled duct is 15.55 times higher than that of the general duct with no baffle, while the optimum TEF is 4.06.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of Baffle Height and Baffle Location on Heat Transfer and Flow Profiles in a Baffled Duct: A CFD Analysis\",\"authors\":\"A. Boonloi, W. Jedsadaratanachai\",\"doi\":\"10.1155/2022/3698887\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"CFD analysis of flow and heat transfer characteristics in a baffled duct is reported. The baffle locations (\\n \\n s\\n =\\n 0.05\\n H\\n –\\n 0.40\\n H\\n \\n ), flow paths (V-apex directing Downstream or VD and V-apex directing Upstream or VU), and baffle heights (\\n \\n b\\n =\\n 0.05\\n H\\n –\\n 0.30\\n H\\n \\n ) are investigated in the laminar flow regime with the Reynolds number based on the entry conditions between 100 and 2,000. Solutions of the present work are obtained by the finite volume method (a commercial code). Key mechanisms such as fluid streams, impinging streams, and disturbed thermal boundary layer in the baffled duct are observed. The baffle locations have high impact on flow and heat transfer behavior. The best heat transfer rate of the baffled duct is 15.55 times higher than that of the general duct with no baffle, while the optimum TEF is 4.06.\",\"PeriodicalId\":45541,\"journal\":{\"name\":\"Modelling and Simulation in Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2022-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Modelling and Simulation in Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1155/2022/3698887\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Modelling and Simulation in Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/2022/3698887","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
本文报道了折流板管内流动和传热特性的CFD分析。在雷诺数为100 ~ 2000的层流条件下，研究了挡板位置(s = 0.05 H ~ 0.40 H)、流道(v -顶点指向下游或VD和v -顶点指向上游或VU)和挡板高度(b = 0.05 H ~ 0.30 H)。本文采用有限体积法(商业规范)求解。观察了折流管中流体流动、碰撞流和扰动热边界层等关键机理。挡板的位置对流动和传热行为有很大的影响。折流板风管的最佳换热率是普通无折流板风管的15.55倍，最佳TEF为4.06。
Effects of Baffle Height and Baffle Location on Heat Transfer and Flow Profiles in a Baffled Duct: A CFD Analysis
CFD analysis of flow and heat transfer characteristics in a baffled duct is reported. The baffle locations (
s
=
0.05
H
–
0.40
H
), flow paths (V-apex directing Downstream or VD and V-apex directing Upstream or VU), and baffle heights (
b
=
0.05
H
–
0.30
H
) are investigated in the laminar flow regime with the Reynolds number based on the entry conditions between 100 and 2,000. Solutions of the present work are obtained by the finite volume method (a commercial code). Key mechanisms such as fluid streams, impinging streams, and disturbed thermal boundary layer in the baffled duct are observed. The baffle locations have high impact on flow and heat transfer behavior. The best heat transfer rate of the baffled duct is 15.55 times higher than that of the general duct with no baffle, while the optimum TEF is 4.06.
期刊介绍：
Modelling and Simulation in Engineering aims at providing a forum for the discussion of formalisms, methodologies and simulation tools that are intended to support the new, broader interpretation of Engineering. Competitive pressures of Global Economy have had a profound effect on the manufacturing in Europe, Japan and the USA with much of the production being outsourced. In this context the traditional interpretation of engineering profession linked to the actual manufacturing needs to be broadened to include the integration of outsourced components and the consideration of logistic, economical and human factors in the design of engineering products and services.
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