利用扩散器通道强化热交换器中的热传递

IF 1 4区工程技术 Q4 MECHANICS

Fluid Dynamics Pub Date : 2024-11-07 DOI:10.1134/S0015462824602766

A. I. Reshmin, V. G. Lushchik, M. S. Makarova

{"title":"利用扩散器通道强化热交换器中的热传递","authors":"A. I. Reshmin, V. G. Lushchik, M. S. Makarova","doi":"10.1134/S0015462824602766","DOIUrl":null,"url":null,"abstract":"<p>The results of studies on the intensification of heat transfer in round and flat continuous diffusers for a number of diffusers’ opening angles are presented. Numerical modeling of heat transfer is carried out using a three-parameter differential RANS turbulence model supplemented with a transfer equation for a turbulent heat flow. It is shown that at the same opening angle in a round diffuser, the friction coefficient, Nusselt number, and turbulence intensity are significantly higher than in a flat diffuser, and these excesses increase with an increase in the opening angle. The possibility of using diffuser channels in plate and round pipe-in-pipe heat exchangers is considered.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"59 4","pages":"987 - 995"},"PeriodicalIF":1.0000,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Intensification of Heat Transfer in Heat Exchangers with Diffuser Channels\",\"authors\":\"A. I. Reshmin, V. G. Lushchik, M. S. Makarova\",\"doi\":\"10.1134/S0015462824602766\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The results of studies on the intensification of heat transfer in round and flat continuous diffusers for a number of diffusers’ opening angles are presented. Numerical modeling of heat transfer is carried out using a three-parameter differential RANS turbulence model supplemented with a transfer equation for a turbulent heat flow. It is shown that at the same opening angle in a round diffuser, the friction coefficient, Nusselt number, and turbulence intensity are significantly higher than in a flat diffuser, and these excesses increase with an increase in the opening angle. The possibility of using diffuser channels in plate and round pipe-in-pipe heat exchangers is considered.</p>\",\"PeriodicalId\":560,\"journal\":{\"name\":\"Fluid Dynamics\",\"volume\":\"59 4\",\"pages\":\"987 - 995\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2024-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fluid Dynamics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0015462824602766\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Dynamics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0015462824602766","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}

引用次数: 0

摘要

本文介绍了针对若干扩散器开口角度对圆形和扁平连续扩散器传热强化的研究结果。利用三参数微分 RANS 湍流模型，并辅以湍流热流的传递方程，对传热进行了数值建模。结果表明，在相同的开口角度下，圆形扩散器的摩擦系数、努塞尔特数和湍流强度明显高于平面扩散器，而且这些过量随开口角度的增大而增加。研究考虑了在板式和圆形管中管式热交换器中使用扩散器通道的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Intensification of Heat Transfer in Heat Exchangers with Diffuser Channels

查看原文本刊更多论文

Intensification of Heat Transfer in Heat Exchangers with Diffuser Channels

The results of studies on the intensification of heat transfer in round and flat continuous diffusers for a number of diffusers’ opening angles are presented. Numerical modeling of heat transfer is carried out using a three-parameter differential RANS turbulence model supplemented with a transfer equation for a turbulent heat flow. It is shown that at the same opening angle in a round diffuser, the friction coefficient, Nusselt number, and turbulence intensity are significantly higher than in a flat diffuser, and these excesses increase with an increase in the opening angle. The possibility of using diffuser channels in plate and round pipe-in-pipe heat exchangers is considered.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Fluid Dynamics MECHANICS-PHYSICS, FLUIDS & PLASMAS

CiteScore

1.30

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.