{"title":"充填床上湍流的渗透率依赖性","authors":"Kazuhiko Suga, Masatoshi Era, Yusuke Kuwata","doi":"10.1007/s11242-025-02218-9","DOIUrl":null,"url":null,"abstract":"<div><p>To characterize turbulence over porous media with porosities <span>\\(\\varphi <0.5\\)</span>, three types of packed-beds were manufactured: cubically packed spheres (case S), randomly packed rice-grain-shaped pellets (case E), and crushed stones (case C), with measured porosities of <span>\\(\\varphi =0.45\\)</span>, 0.37, and 0.30, respectively. After measuring their permeabilities, particle image velocimetry (PIV) measurements were conducted for flows under conditions characterized by the permeability Reynolds number (<span>\\(Re_K\\)</span>) ranging from 2.1 to 18.3. The results were then compared with previous data on turbulent flows over foamed ceramics with a porosity of <span>\\(\\varphi \\simeq 0.8\\)</span>, reported by Suga et al. (Int J Heat Fluid Flow 31(6), 974–984, 2010). The measured turbulence characteristics were analyzed to examine their correlation with <span>\\(Re_K\\)</span> and to evaluate the applicability of a unified scaling approach across a wide range of porous beds. The findings suggest that while some distribution profiles generally follow <span>\\(Re_K\\)</span>, this parameter alone is insufficient as a universal scaling factor for turbulence over packed-beds, as the roughness scale also exhibits significant dependence on surface shape rather than the porosity.</p></div>","PeriodicalId":804,"journal":{"name":"Transport in Porous Media","volume":"152 10","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Permeability Dependency of Turbulence Over Packed-Beds\",\"authors\":\"Kazuhiko Suga, Masatoshi Era, Yusuke Kuwata\",\"doi\":\"10.1007/s11242-025-02218-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>To characterize turbulence over porous media with porosities <span>\\\\(\\\\varphi <0.5\\\\)</span>, three types of packed-beds were manufactured: cubically packed spheres (case S), randomly packed rice-grain-shaped pellets (case E), and crushed stones (case C), with measured porosities of <span>\\\\(\\\\varphi =0.45\\\\)</span>, 0.37, and 0.30, respectively. After measuring their permeabilities, particle image velocimetry (PIV) measurements were conducted for flows under conditions characterized by the permeability Reynolds number (<span>\\\\(Re_K\\\\)</span>) ranging from 2.1 to 18.3. The results were then compared with previous data on turbulent flows over foamed ceramics with a porosity of <span>\\\\(\\\\varphi \\\\simeq 0.8\\\\)</span>, reported by Suga et al. (Int J Heat Fluid Flow 31(6), 974–984, 2010). The measured turbulence characteristics were analyzed to examine their correlation with <span>\\\\(Re_K\\\\)</span> and to evaluate the applicability of a unified scaling approach across a wide range of porous beds. The findings suggest that while some distribution profiles generally follow <span>\\\\(Re_K\\\\)</span>, this parameter alone is insufficient as a universal scaling factor for turbulence over packed-beds, as the roughness scale also exhibits significant dependence on surface shape rather than the porosity.</p></div>\",\"PeriodicalId\":804,\"journal\":{\"name\":\"Transport in Porous Media\",\"volume\":\"152 10\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transport in Porous Media\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11242-025-02218-9\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transport in Porous Media","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11242-025-02218-9","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Permeability Dependency of Turbulence Over Packed-Beds
To characterize turbulence over porous media with porosities \(\varphi <0.5\), three types of packed-beds were manufactured: cubically packed spheres (case S), randomly packed rice-grain-shaped pellets (case E), and crushed stones (case C), with measured porosities of \(\varphi =0.45\), 0.37, and 0.30, respectively. After measuring their permeabilities, particle image velocimetry (PIV) measurements were conducted for flows under conditions characterized by the permeability Reynolds number (\(Re_K\)) ranging from 2.1 to 18.3. The results were then compared with previous data on turbulent flows over foamed ceramics with a porosity of \(\varphi \simeq 0.8\), reported by Suga et al. (Int J Heat Fluid Flow 31(6), 974–984, 2010). The measured turbulence characteristics were analyzed to examine their correlation with \(Re_K\) and to evaluate the applicability of a unified scaling approach across a wide range of porous beds. The findings suggest that while some distribution profiles generally follow \(Re_K\), this parameter alone is insufficient as a universal scaling factor for turbulence over packed-beds, as the roughness scale also exhibits significant dependence on surface shape rather than the porosity.
期刊介绍:
-Publishes original research on physical, chemical, and biological aspects of transport in porous media-
Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)-
Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications-
Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes-
Expanded in 2007 from 12 to 15 issues per year.
Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).