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Letters in Heat and Mass Transfer最新文献

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Influence of the Kapitza resistance on nucleate boiling of liquid helium Kapitza阻力对液氦成核沸腾的影响
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90018-2
Li-He Lin , T.H.K. Frederking
{"title":"Influence of the Kapitza resistance on nucleate boiling of liquid helium","authors":"Li-He Lin ,&nbsp;T.H.K. Frederking","doi":"10.1016/0094-4548(82)90018-2","DOIUrl":"10.1016/0094-4548(82)90018-2","url":null,"abstract":"<div><p>A modified Schmidt equation is proposed which includes the influence of a non-linear thermal Kapitza resistance on nucleate boiling at solids immersed in liquid helium I. Data of transient nucleate boiling heat transport, at increasing heat flux, are in good agreement with the equation.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 473-478"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90018-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79246710","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: 4
Effect of vibration on natural convection heat transfer from vertical fin arrays 振动对垂直翅片阵列自然对流换热的影响
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90020-0
P.K. Nag, A. Bhattacharya
{"title":"Effect of vibration on natural convection heat transfer from vertical fin arrays","authors":"P.K. Nag,&nbsp;A. Bhattacharya","doi":"10.1016/0094-4548(82)90020-0","DOIUrl":"10.1016/0094-4548(82)90020-0","url":null,"abstract":"<div><p>The effect of vibration on natural convection heat transfer from vertical rectangular fin arrays of different fin spacings and fin lengths was investigated experimentally. It was seen that up to a certain threshold value of the product of amplitude and frequency (15 mm/s), the imparting of vibration did not have any significant effect on heat transfer from the fin array: Beyond this value, however, the heat transfer rate increased considerably with the increase in the intensity of vibration, the maximum increase obtained being 250% when the vibrational energy input was 90 W.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 487-498"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90020-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80853749","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: 10
An integral method in laminar film condensation on plane and axisymmetric bodies 平面和轴对称物体层流膜凝结的积分方法
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90015-7
Akira Nakayama, Hitoshi Koyama, Sei-ichi Ohsawa
{"title":"An integral method in laminar film condensation on plane and axisymmetric bodies","authors":"Akira Nakayama,&nbsp;Hitoshi Koyama,&nbsp;Sei-ichi Ohsawa","doi":"10.1016/0094-4548(82)90015-7","DOIUrl":"10.1016/0094-4548(82)90015-7","url":null,"abstract":"<div><p>A simple integral method has been developed for laminar film condensation on plane and axisymmetric bodies. The method retains the acceleration terms in the momentum equation so as to account for the Prandtl number effect. The results appear to be in close accord with those of the complete boundary layer equations. The discussions extend over a wide range of Prandtl numbers and the temperature difference across the film, with an emphasis on the low Prandtl number case.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 443-453"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90015-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87700216","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: 4
Free convection from a cone with a closed end 有一个封闭的锥的自由对流
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90016-9
Akira Nakayama, Sei-ichi Ohsawa, Hitoshi Koyama
{"title":"Free convection from a cone with a closed end","authors":"Akira Nakayama,&nbsp;Sei-ichi Ohsawa,&nbsp;Hitoshi Koyama","doi":"10.1016/0094-4548(82)90016-9","DOIUrl":"10.1016/0094-4548(82)90016-9","url":null,"abstract":"<div><p>Full Navier-Stokes equations have been solved numerically to investigate the laminar free convective heat transfer from a cone with a closed end. It is shown that the elliptic nature of the flow contributes significantly toward the augmentation of the local heat transfer rate.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 455-462"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90016-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87557370","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: 6
Forced convection with constant vorticity over an infinite wedge 在无限楔上具有恒定涡度的强迫对流
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90021-2
Sidney Stuckenbruck
{"title":"Forced convection with constant vorticity over an infinite wedge","authors":"Sidney Stuckenbruck","doi":"10.1016/0094-4548(82)90021-2","DOIUrl":"10.1016/0094-4548(82)90021-2","url":null,"abstract":"<div><p>The vorticity effect on the forced convection problem of a viscois flow over a semi-infinite non-isothermal wedge is analysed. A solution is found using the method of matched asymptotic expansions up to the order of <span><math><mtext>1</mtext><mtext>Re</mtext></math></span>. Numerical solutions for wedge semi-angle of 0 and 18 degrees, as well as Prandtl numbers 0.7, 1 and 10 are shown. The results indicate that the vorticity can increase or decrease considerably the heat flux and that the second order terms may introduce significant corrections for low Reynolds numbers (less than 10<sup>3</sup>).</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 499-515"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90021-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75129398","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
Author index to volume 9, 1982 1982年第9卷的作者索引
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90024-8
{"title":"Author index to volume 9, 1982","authors":"","doi":"10.1016/0094-4548(82)90024-8","DOIUrl":"https://doi.org/10.1016/0094-4548(82)90024-8","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 526-527"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90024-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91983458","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
Simulation of binary vapor condensation in the presence of an inert gas 在惰性气体存在下二元蒸汽冷凝的模拟
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90017-0
Ross Taylor, Matthew K. Noah
{"title":"Simulation of binary vapor condensation in the presence of an inert gas","authors":"Ross Taylor,&nbsp;Matthew K. Noah","doi":"10.1016/0094-4548(82)90017-0","DOIUrl":"https://doi.org/10.1016/0094-4548(82)90017-0","url":null,"abstract":"<div><p>Two recently developed simplified models of multicomponent mass transfer are employed to determine the composition profiles during the condensation of a binary vapor (methanol-water) from an inert gas (air or helium). It is found that the profiles and the predicted outlet conditions are in excellent agreement with the results obtained using an exact solution of the Maxwell-Stefan equations to predict the mass transfer rates. It is concluded that the simplified approach to multicomponent mass transfer calculations will probably be adequate for many design problems, thereby realising important savings in computational time and computer program complexity.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 463-472"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90017-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91983457","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
Thermal convection and boiling in a porous medium 多孔介质中的热对流和沸腾
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90014-5
Haim H. Bau , K.E. Torrance
{"title":"Thermal convection and boiling in a porous medium","authors":"Haim H. Bau ,&nbsp;K.E. Torrance","doi":"10.1016/0094-4548(82)90014-5","DOIUrl":"10.1016/0094-4548(82)90014-5","url":null,"abstract":"<div><p>Experimental observations of boiling in a water-saturated porous medium are reported. The porous medium is contained in a vertical circular cylinder of diameter D and height H which is heated from below and cooled from above. Single-cell thermal convection occurs prior to the onset of boiling. With the onset of boiling, an isothermal two-phase zone forms above the bottom in regions of ascending convection. The size of the two-phase zone increases with increasing heat flux. At high heat fluxes the cellular convertion flow disappears; a horizontal water layer is then observed to overlie a two-phase layer. A vertical countercurrent flow of liquid and vapor dominates heat transfer in the two-phase layer. In the layered state, an oscillatory boiling mode can develop which is attributed to the periodic formation of a vapor layer at the heating surface.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 431-441"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90014-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87127289","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: 14
List of contents for volume 9, 1982 1982年第9卷的目录
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90023-6
{"title":"List of contents for volume 9, 1982","authors":"","doi":"10.1016/0094-4548(82)90023-6","DOIUrl":"https://doi.org/10.1016/0094-4548(82)90023-6","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 521-525"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90023-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92041141","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
Heat transfer enhancement in coiled tubes 强化盘管传热
Letters in Heat and Mass Transfer Pub Date : 1982-11-01 DOI: 10.1016/0094-4548(82)90019-4
S. Manafzadeh, H.A. Simon, J.C.F. Chow
{"title":"Heat transfer enhancement in coiled tubes","authors":"S. Manafzadeh,&nbsp;H.A. Simon,&nbsp;J.C.F. Chow","doi":"10.1016/0094-4548(82)90019-4","DOIUrl":"10.1016/0094-4548(82)90019-4","url":null,"abstract":"<div><p>The mechanism of Nusselt number oscillation at the junction of a straight and helical tube is examined experimentally. The heat transfer behavior in this development region is used as the basis for heat transfer enhancement in a coil in which the curvature is repeatedly reversed.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"9 6","pages":"Pages 479-485"},"PeriodicalIF":0.0,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(82)90019-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81873994","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: 7
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