syrine khadhrawi, haikel ben hamed, fakhreddine segni oueslati
{"title":"金属泡沫的数学随机生成和混合太阳能集热器传热的 3D 数值模拟","authors":"syrine khadhrawi, haikel ben hamed, fakhreddine segni oueslati","doi":"10.1615/jpormedia.2024052398","DOIUrl":null,"url":null,"abstract":"The primary motive of the study is to explore numerically the heat transfer a hybrid solar collector, which is a partially filled Cartesian channel with random generated Metal Foam (MF). The channel is subjected to solar irradiation, and through it the air flows.To generate the MF, random Gaussian correlations are used. This technique allows spatial control of density, permeability, and porosity, whose values are also theoretically accessible. To solve the equations of fluid dynamics and heat transfer, a finite volume multigrid scheme is used. Energy equation is framed on the two temperatures model, and momentum equation is that of the clear fluid case, since the pore’s volumes are largely greater than the VER in the porous media. Thevelocity as well as temperature fields are discussed for different pertinent parameters, and mathematic correlations are given between the Nusselt, the porosity, the Richardson and the Reynolds numbers. It is found that beyond two blocks, it is useless to add MF because we reach higher homogeneity in temperature and good efficiency in heat transfer. It is also found that the two temperatures model is very realisticthan models with averaged properties, and gives wide range of perspectivesthanks to the possibility of carrying out numerical and experimental investigations onthe same MF model: randomly generated and printable in 3D","PeriodicalId":50082,"journal":{"name":"Journal of Porous Media","volume":"25 1","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"MATHEMATICAL RANDOM GENERATION OF METAL FOAM AND NUMERICAL 3D SIMULATIONS OF HEAT TRANSFER IN A HYBRID SOLAR COLLECTOR\",\"authors\":\"syrine khadhrawi, haikel ben hamed, fakhreddine segni oueslati\",\"doi\":\"10.1615/jpormedia.2024052398\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The primary motive of the study is to explore numerically the heat transfer a hybrid solar collector, which is a partially filled Cartesian channel with random generated Metal Foam (MF). The channel is subjected to solar irradiation, and through it the air flows.To generate the MF, random Gaussian correlations are used. This technique allows spatial control of density, permeability, and porosity, whose values are also theoretically accessible. To solve the equations of fluid dynamics and heat transfer, a finite volume multigrid scheme is used. Energy equation is framed on the two temperatures model, and momentum equation is that of the clear fluid case, since the pore’s volumes are largely greater than the VER in the porous media. Thevelocity as well as temperature fields are discussed for different pertinent parameters, and mathematic correlations are given between the Nusselt, the porosity, the Richardson and the Reynolds numbers. It is found that beyond two blocks, it is useless to add MF because we reach higher homogeneity in temperature and good efficiency in heat transfer. It is also found that the two temperatures model is very realisticthan models with averaged properties, and gives wide range of perspectivesthanks to the possibility of carrying out numerical and experimental investigations onthe same MF model: randomly generated and printable in 3D\",\"PeriodicalId\":50082,\"journal\":{\"name\":\"Journal of Porous Media\",\"volume\":\"25 1\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Porous Media\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1615/jpormedia.2024052398\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Porous Media","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1615/jpormedia.2024052398","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
MATHEMATICAL RANDOM GENERATION OF METAL FOAM AND NUMERICAL 3D SIMULATIONS OF HEAT TRANSFER IN A HYBRID SOLAR COLLECTOR
The primary motive of the study is to explore numerically the heat transfer a hybrid solar collector, which is a partially filled Cartesian channel with random generated Metal Foam (MF). The channel is subjected to solar irradiation, and through it the air flows.To generate the MF, random Gaussian correlations are used. This technique allows spatial control of density, permeability, and porosity, whose values are also theoretically accessible. To solve the equations of fluid dynamics and heat transfer, a finite volume multigrid scheme is used. Energy equation is framed on the two temperatures model, and momentum equation is that of the clear fluid case, since the pore’s volumes are largely greater than the VER in the porous media. Thevelocity as well as temperature fields are discussed for different pertinent parameters, and mathematic correlations are given between the Nusselt, the porosity, the Richardson and the Reynolds numbers. It is found that beyond two blocks, it is useless to add MF because we reach higher homogeneity in temperature and good efficiency in heat transfer. It is also found that the two temperatures model is very realisticthan models with averaged properties, and gives wide range of perspectivesthanks to the possibility of carrying out numerical and experimental investigations onthe same MF model: randomly generated and printable in 3D
期刊介绍:
The Journal of Porous Media publishes original full-length research articles (and technical notes) in a wide variety of areas related to porous media studies, such as mathematical modeling, numerical and experimental techniques, industrial and environmental heat and mass transfer, conduction, convection, radiation, particle transport and capillary effects, reactive flows, deformable porous media, biomedical applications, and mechanics of the porous substrate. Emphasis will be given to manuscripts that present novel findings pertinent to these areas. The journal will also consider publication of state-of-the-art reviews. Manuscripts applying known methods to previously solved problems or providing results in the absence of scientific motivation or application will not be accepted. Submitted articles should contribute to the understanding of specific scientific problems or to solution techniques that are useful in applications. Papers that link theory with computational practice to provide insight into the processes are welcome.