{"title":"d/ d =0.95÷0.90, t/ d =0.25÷1.00，高雷诺数Re=106的三角形和方形紊流管内热交换的理论数学建模","authors":"Igor Lobanov","doi":"10.30987/1999-8775-2021-11-20-35","DOIUrl":null,"url":null,"abstract":"Mathematical modeling of heat exchange process in straight and round horizontal pipes with protrusions and d/D=0.95...0.90, t/D=0.25...1.00 of triangular and square sections with large Reynolds numbers (RE=106) are carried out on the basis of multiblock computing technologies based on solutions of factored and finite-volume algorithm of RANS equations and energy equations. It is shown that for higher square protrusions and at higher Reynolds numbers, a limited increase in NU/NUgl is accompanied by a significant increase in relative hydro resist ance in accordance with the higher Reynolds number; for triangular turbulators, this persists and even deepens.","PeriodicalId":9358,"journal":{"name":"Bulletin of Bryansk state technical university","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"THEORETICAL MATHEMATICAL MODELING OF HEAT EXCHANGE IN PIPES WITH TRIANGULAR AND SQUARE TURBULATORS WITH d/D=0.95÷0.90, t/D=0.25÷1.00 AND HIGH REYNOLDS NUMBERS Re=106\",\"authors\":\"Igor Lobanov\",\"doi\":\"10.30987/1999-8775-2021-11-20-35\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Mathematical modeling of heat exchange process in straight and round horizontal pipes with protrusions and d/D=0.95...0.90, t/D=0.25...1.00 of triangular and square sections with large Reynolds numbers (RE=106) are carried out on the basis of multiblock computing technologies based on solutions of factored and finite-volume algorithm of RANS equations and energy equations. It is shown that for higher square protrusions and at higher Reynolds numbers, a limited increase in NU/NUgl is accompanied by a significant increase in relative hydro resist ance in accordance with the higher Reynolds number; for triangular turbulators, this persists and even deepens.\",\"PeriodicalId\":9358,\"journal\":{\"name\":\"Bulletin of Bryansk state technical university\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-11-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Bryansk state technical university\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.30987/1999-8775-2021-11-20-35\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Bryansk state technical university","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.30987/1999-8775-2021-11-20-35","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
基于基于RANS方程和能量方程的因式解和有限体积算法的多块计算技术，对大雷诺数(RE=106)的三角形截面和方形截面d/ d =0.95 ~ 0.90, t/ d =0.25 ~ 1.00的直、圆突出水平管换热过程进行了数学建模。结果表明，对于较大的方突和较高的雷诺数，NU/NUgl的有限增加伴随着相对水阻力的显著增加，且随雷诺数的增加而增加;对于三角形湍流，这种情况持续存在，甚至加深。
THEORETICAL MATHEMATICAL MODELING OF HEAT EXCHANGE IN PIPES WITH TRIANGULAR AND SQUARE TURBULATORS WITH d/D=0.95÷0.90, t/D=0.25÷1.00 AND HIGH REYNOLDS NUMBERS Re=106
Mathematical modeling of heat exchange process in straight and round horizontal pipes with protrusions and d/D=0.95...0.90, t/D=0.25...1.00 of triangular and square sections with large Reynolds numbers (RE=106) are carried out on the basis of multiblock computing technologies based on solutions of factored and finite-volume algorithm of RANS equations and energy equations. It is shown that for higher square protrusions and at higher Reynolds numbers, a limited increase in NU/NUgl is accompanied by a significant increase in relative hydro resist ance in accordance with the higher Reynolds number; for triangular turbulators, this persists and even deepens.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
