{"title":"An Alternative Model for Flow Boiling Heat Transfer","authors":"V. Wadekar","doi":"10.1201/9780367812089-24","DOIUrl":"https://doi.org/10.1201/9780367812089-24","url":null,"abstract":"","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133467052","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}
{"title":"Gas-Assisted Evaporative Cooling in a Narrow Channel","authors":"A. Bar-Cohen, G. Solbreken","doi":"10.1201/9780367812089-45","DOIUrl":"https://doi.org/10.1201/9780367812089-45","url":null,"abstract":"","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114433115","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}
{"title":"Study of Transition Boiling Heat Transfer in Quenching of a Flat Surface Using Surface Temperature and Heat Flux Microsensors","authors":"Jason J. Xu, K. Adham-Khodaparast, M. Kawaji","doi":"10.1201/9780367812089-32","DOIUrl":"https://doi.org/10.1201/9780367812089-32","url":null,"abstract":"","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130166560","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}
{"title":"The Effects of Internal Ribs and Fins on Annular Two-Phase Transport in Compact Evaporator Passages","authors":"N. Hawks, K. Shollenberger, P. V. Carey","doi":"10.1201/9780367812089-44","DOIUrl":"https://doi.org/10.1201/9780367812089-44","url":null,"abstract":"","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129859799","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}
{"title":"Theoretical Modeling of CHF for Near-Saturated Pool Boiling and Flow Boiling from Short Heaters Using the Interfacial Lift-Off Criterion","authors":"I. Mudawar, J. Galloway, C. O. Gersey","doi":"10.1201/9780367812089-29","DOIUrl":"https://doi.org/10.1201/9780367812089-29","url":null,"abstract":"Pool boiling and flow boiling were examined for near-saturated bulk conditions in order to determine the critical heat flux (CHF) trigger mechanism for each. Photographic studies of the wall region revealed features common to both situations. At fluxes below CHF, the vapor coalesces into a wavy layer which permits wetting only in wetting fronts, the portions of the liquid-vapor interface which contact the wall as a result of the interfacial waviness. Close examination of the interfacial features revealed the waves are generated from the lower edge of the heater in pool boiling and the heater`s upstream region in flow boiling. Wavelengths follow predictions based upon the Kelvin-Helmholtz instability criterion. Critical heat flux in both cases occurs when the pressure force exerted upon the interface due to interfacial curvature, which tends to preserve interfacial contact with the wall prior to CHF, is overcome by the momentum of vapor at the site of the first wetting front, causing the interface to lift away from the wall. It is shown this interfacial lift-off criterion facilitates accurate theoretical modeling of CHF in pool boiling and in flow boiling in both straight and curved channels.","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126123545","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}
{"title":"Flow Boiling in Horizontal and Vertical Tubes:The Effect of Tube Orientation on Heat Transfer","authors":"N. Kattan, J. Thome, D. Favrat","doi":"10.1201/9780367812089-14","DOIUrl":"https://doi.org/10.1201/9780367812089-14","url":null,"abstract":"As part of a comprehensive study on factors affecting flow boiling in horizontal tubes, local boiling heat transfer coefficients were measured for R- 134a evaporating inside the same 12.00 mm bore, plain tube for horizontal flow, vertical upflow and vertical downflow over a wide range of mass velocities, vapor qualities and heat flux for a direct comparison of the effects on tube orientation on heat transfer. The experiments show a significant effect of flow direction on local heat transfer coefficients with upflow giving significantly lower values and downflow yielding even lower values. A flashing/subcooling effect on the heat transfer process caused by the negative/positive pressure gradient for upflow/downflow, respectively, is proposed as an important new factor affecting flow boiling.","PeriodicalId":201937,"journal":{"name":"Convective Flow Boiling","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126600781","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}