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Boundary condition effects on natural convection of Bingham fluids in a square enclosure with differentially heated horizontal walls 边界条件对水平壁面差热方形壁面中宾厄姆流体自然对流的影响
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012004759
O. Turan, R. Poole, N. Chakraborty
{"title":"Boundary condition effects on natural convection of Bingham fluids in a square enclosure with differentially heated horizontal walls","authors":"O. Turan, R. Poole, N. Chakraborty","doi":"10.1615/COMPUTTHERMALSCIEN.2012004759","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012004759","url":null,"abstract":"Natural convection of Bingham fluids in square enclosures with differentially heated horizontal walls has been numerically analyzed for both constant wall temperature (CWT) and constant wall heat flux (CWHF) boundary conditions for different values of Bingham number Bn (i.e., nondimensional yield stress) for nominal Rayleigh and Prandtl numbers ranging from 10 to 10 and from 0.1 to 100, respectively. A semi-implicit pressure-based algorithm is used to solve the steady-state governing equations in the context of the finite-volume methodology in two dimensions. It has been found that the mean Nusselt number Nu increases with increasing Rayleigh number, but Nu is found to be smaller in Bingham fluids than in Newtonian fluids (for the same nominal values of Rayleigh and Prandtl numbers) due to augmented flow resistance in Bingham fluids. Moreover, Nu monotonically decreases with increasing Bingham number irrespective of the boundary condition. Bingham fluids exhibit nonmonotonic Prandtl number Pr dependence on Nu and a detailed physical explanation has been provided for this behavior. Although variation of Nu in response to changes in Rayleigh, Prandtl, and Bingham numbers remains qualitatively similar for both CWT and CWHF boundary conditions, Nu for the CWHF boundary condition for high values of Rayleigh number is found to be smaller than the value obtained for the corresponding CWT configuration for a given set of values of Prandtl and Bingham numbers. The physical reasons for the weaker convective effects in the CWHF boundary condition than in the CWT boundary condition, especially for high values of Rayleigh number, have been explained through a detailed scaling analysis. The scaling relations are used to propose correlations for Nu for both CWT and CWHF boundary conditions and the correlations are shown to capture Nu satisfactorily for the range of Rayleigh, Prandtl, and Bingham numbers considered in this analysis.","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67418819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
NUMERICAL STUDY OF HEAT AND FLUID FLOW PAST A CUBICAL PARTICLE AT SUB-CRITICAL REYNOLDS NUMBERS 在亚临界雷诺数下热和流体流过立方体粒子的数值研究
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012005098
K. Wittig, A. Richter, P. Nikrityuk
{"title":"NUMERICAL STUDY OF HEAT AND FLUID FLOW PAST A CUBICAL PARTICLE AT SUB-CRITICAL REYNOLDS NUMBERS","authors":"K. Wittig, A. Richter, P. Nikrityuk","doi":"10.1615/COMPUTTHERMALSCIEN.2012005098","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012005098","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1615/COMPUTTHERMALSCIEN.2012005098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67419159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
NUMERICAL STUDY OF NANOFLUID HEAT TRANSFER ENHANCEMENT WITH MIXING THERMAL CONDUCTIVITY MODELS 混合导热模型对纳米流体强化传热的数值研究
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2013006287
A. Tongkratoke, A. Pramuanjaroenkij, Apichart Chaengbamrung, S. Kakaç
{"title":"NUMERICAL STUDY OF NANOFLUID HEAT TRANSFER ENHANCEMENT WITH MIXING THERMAL CONDUCTIVITY MODELS","authors":"A. Tongkratoke, A. Pramuanjaroenkij, Apichart Chaengbamrung, S. Kakaç","doi":"10.1615/COMPUTTHERMALSCIEN.2013006287","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2013006287","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1615/COMPUTTHERMALSCIEN.2013006287","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67419905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
THE ROLE OF HELIUM/ARGON GAS FLOW IN A GLASS FIBER DRAWING FURNACE 氦气/氩气流动在玻璃纤维拉丝炉中的作用
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012004538
Kyoungjin Kim, H. Kwak, Dongjoo Kim
{"title":"THE ROLE OF HELIUM/ARGON GAS FLOW IN A GLASS FIBER DRAWING FURNACE","authors":"Kyoungjin Kim, H. Kwak, Dongjoo Kim","doi":"10.1615/COMPUTTHERMALSCIEN.2012004538","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012004538","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67418680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
NUMERICAL SIMULATION OF A TURBULENT FREE JET ISSUING FROM A RECTANGULAR NOZZLE 矩形喷管释放湍流自由射流的数值模拟
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012003883
M. Akbarzadeh, M. Birouk, B. Sarh
{"title":"NUMERICAL SIMULATION OF A TURBULENT FREE JET ISSUING FROM A RECTANGULAR NOZZLE","authors":"M. Akbarzadeh, M. Birouk, B. Sarh","doi":"10.1615/COMPUTTHERMALSCIEN.2012003883","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012003883","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67418935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
LARGE-EDDY SIMULATION OF A BUOYANT PLUME PAST A BLUFF BODY: EFFECTS OF FLOW STRUCTURES ON ENTRAINMENT CHARACTERISTICS 浮力羽流经过钝体的大涡模拟:流动结构对夹带特性的影响
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012005476
H. Suto, Y. Hattori
{"title":"LARGE-EDDY SIMULATION OF A BUOYANT PLUME PAST A BLUFF BODY: EFFECTS OF FLOW STRUCTURES ON ENTRAINMENT CHARACTERISTICS","authors":"H. Suto, Y. Hattori","doi":"10.1615/COMPUTTHERMALSCIEN.2012005476","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012005476","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67419401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PREFACE: FIFTH INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL HEAT TRANSFER KEYNOTE LECTURES 前言:第五届国际计算传热学术研讨会主题演讲
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.V4.I6.10
G. D. Davis, D. Rees
{"title":"PREFACE: FIFTH INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL HEAT TRANSFER KEYNOTE LECTURES","authors":"G. D. Davis, D. Rees","doi":"10.1615/COMPUTTHERMALSCIEN.V4.I6.10","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.V4.I6.10","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1615/COMPUTTHERMALSCIEN.V4.I6.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67420830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Edge effect on phonon transport in suspended and supported graphene nanoribbons 悬浮和支撑石墨烯纳米带中声子输运的边缘效应
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012004393
M. Kimura, T. Matsuzaki, Koji Takahashi
{"title":"Edge effect on phonon transport in suspended and supported graphene nanoribbons","authors":"M. Kimura, T. Matsuzaki, Koji Takahashi","doi":"10.1615/COMPUTTHERMALSCIEN.2012004393","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012004393","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67418646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COMBINED TWO-FLUX APPROXIMATION AND MONTE CARLO MODEL FOR IDENTIFICATION OF RADIATIVE PROPERTIES OF HIGHLY SCATTERING DISPERSED MATERIALS 结合双通量近似和蒙特卡罗模型识别高散射分散材料的辐射特性
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012005025
L. Dombrovsky, K. Ganesan, W. Lipiński
{"title":"COMBINED TWO-FLUX APPROXIMATION AND MONTE CARLO MODEL FOR IDENTIFICATION OF RADIATIVE PROPERTIES OF HIGHLY SCATTERING DISPERSED MATERIALS","authors":"L. Dombrovsky, K. Ganesan, W. Lipiński","doi":"10.1615/COMPUTTHERMALSCIEN.2012005025","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012005025","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67418875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 39
LEVEL-SET METHOD FOR MULTIPHASE FLOWS 多相流的水平集方法
IF 1.5
Computational Thermal Sciences Pub Date : 2012-01-01 DOI: 10.1615/COMPUTTHERMALSCIEN.2012006412
Y. Yap, J. Chai
{"title":"LEVEL-SET METHOD FOR MULTIPHASE FLOWS","authors":"Y. Yap, J. Chai","doi":"10.1615/COMPUTTHERMALSCIEN.2012006412","DOIUrl":"https://doi.org/10.1615/COMPUTTHERMALSCIEN.2012006412","url":null,"abstract":"","PeriodicalId":45052,"journal":{"name":"Computational Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67419020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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