{"title":"雨滴撞击板式建筑的理论预测","authors":"G.G. Rodgers , G. Poots , J.K. Page , W.M. Pickering","doi":"10.1016/0007-3628(74)90016-4","DOIUrl":null,"url":null,"abstract":"<div><p>The turbulent air flow around a slab type building has been measured by Wise, Sexton and Lillywhite using a scale model in a wind tunnel. Using their data procedures are developed for calculating raindrop trajectories for droplets having radius <em>r</em> in the range 0 ≦ <em>r</em> ≦ 2500 <em>μ</em> with gradient wind speeds up to 26·8 m/s.</p><p>Grazing trajectories, for fixed droplet size, are obtained and from these the effective collision cross-section of the building is deduced. Employing the droplet size distribution of Best, for a given rainfall intensity, raindrop impaction rates over the building are evaluated. Approximate analytical methods are developed to predict impaction rates and their dependence on the building aspect ratio.</p></div>","PeriodicalId":9442,"journal":{"name":"Building Science","volume":"9 3","pages":"Pages 181-190"},"PeriodicalIF":0.0000,"publicationDate":"1974-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0007-3628(74)90016-4","citationCount":"18","resultStr":"{\"title\":\"Theoretical predictions of raindrop impaction on a slab type building\",\"authors\":\"G.G. Rodgers , G. Poots , J.K. Page , W.M. Pickering\",\"doi\":\"10.1016/0007-3628(74)90016-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The turbulent air flow around a slab type building has been measured by Wise, Sexton and Lillywhite using a scale model in a wind tunnel. Using their data procedures are developed for calculating raindrop trajectories for droplets having radius <em>r</em> in the range 0 ≦ <em>r</em> ≦ 2500 <em>μ</em> with gradient wind speeds up to 26·8 m/s.</p><p>Grazing trajectories, for fixed droplet size, are obtained and from these the effective collision cross-section of the building is deduced. Employing the droplet size distribution of Best, for a given rainfall intensity, raindrop impaction rates over the building are evaluated. Approximate analytical methods are developed to predict impaction rates and their dependence on the building aspect ratio.</p></div>\",\"PeriodicalId\":9442,\"journal\":{\"name\":\"Building Science\",\"volume\":\"9 3\",\"pages\":\"Pages 181-190\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1974-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0007-3628(74)90016-4\",\"citationCount\":\"18\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Building Science\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0007362874900164\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Building Science","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0007362874900164","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Theoretical predictions of raindrop impaction on a slab type building
The turbulent air flow around a slab type building has been measured by Wise, Sexton and Lillywhite using a scale model in a wind tunnel. Using their data procedures are developed for calculating raindrop trajectories for droplets having radius r in the range 0 ≦ r ≦ 2500 μ with gradient wind speeds up to 26·8 m/s.
Grazing trajectories, for fixed droplet size, are obtained and from these the effective collision cross-section of the building is deduced. Employing the droplet size distribution of Best, for a given rainfall intensity, raindrop impaction rates over the building are evaluated. Approximate analytical methods are developed to predict impaction rates and their dependence on the building aspect ratio.