{"title":"关于泛洪和回流现象机理的新概念","authors":"D. Moalem Maron , A.E. Dukler","doi":"10.1016/0094-4548(81)90053-9","DOIUrl":null,"url":null,"abstract":"<div><p>A film model for flooding and flow reversal has been explored for two cases of coupling (circulation) or decoupling (split) between the upflow and downflow. It is shown that for a given interfacial shear (parameter) there exists multiple solutions and oscillation between the possible states takes place. Thus, it would appear that large waves are formed, but in fact the flow is controlled by film equations. The multiple states of the film and the switching mechanism between the slates are supported exceptionally well by experimental findings of mean and fluctuating film thickness and pressure drop.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 453-463"},"PeriodicalIF":0.0000,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90053-9","citationCount":"9","resultStr":"{\"title\":\"New concepts on the mechanisms of flooding and flow reversal phenomena\",\"authors\":\"D. Moalem Maron , A.E. Dukler\",\"doi\":\"10.1016/0094-4548(81)90053-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A film model for flooding and flow reversal has been explored for two cases of coupling (circulation) or decoupling (split) between the upflow and downflow. It is shown that for a given interfacial shear (parameter) there exists multiple solutions and oscillation between the possible states takes place. Thus, it would appear that large waves are formed, but in fact the flow is controlled by film equations. The multiple states of the film and the switching mechanism between the slates are supported exceptionally well by experimental findings of mean and fluctuating film thickness and pressure drop.</p></div>\",\"PeriodicalId\":100875,\"journal\":{\"name\":\"Letters in Heat and Mass Transfer\",\"volume\":\"8 6\",\"pages\":\"Pages 453-463\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1981-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0094-4548(81)90053-9\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Letters in Heat and Mass Transfer\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0094454881900539\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Letters in Heat and Mass Transfer","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0094454881900539","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
New concepts on the mechanisms of flooding and flow reversal phenomena
A film model for flooding and flow reversal has been explored for two cases of coupling (circulation) or decoupling (split) between the upflow and downflow. It is shown that for a given interfacial shear (parameter) there exists multiple solutions and oscillation between the possible states takes place. Thus, it would appear that large waves are formed, but in fact the flow is controlled by film equations. The multiple states of the film and the switching mechanism between the slates are supported exceptionally well by experimental findings of mean and fluctuating film thickness and pressure drop.
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