CFD Simulation of Gravitational Sedimentation and Clustering Effects on Heat Transfer of a Nano-ferrofluid
(0) In this attempt heat transfer behavior of one type of nanofluids in a disc geometry has been investigated using computational fluid dynamics (CFD) technique. Effects of gravity induced sedimentation and magnetic particles diameter on thermal treatment of the fluid have been studied. In order to compare the effect of single phase approximation and mixture model on prediction of nanofluid behavior, both methods were applied in simulations. It was obtained that in the presence of gravity because of natural convection heat transfer will enhance. In addition, gravity causes separation of phases and also sedimentation in the nanofluid. It was also confirmed that at value of the ratio of thermal energy to dipole-dipole contact energy more than unity, thermal forces are able to disrupt agglomerates.
A.Jafari S.M.Mousavi T.Tynjala P.Sarkomaa
Laboratory of Engineering Thermodynamics,Lappeenranta University of Technology Lappeenranta,Finland Biotechnology Group,Chemical Engineering Department,Tarbiat Modares University Tehran,Iran;Departmen aboratory of Engineering Thermodynamics,Lappeenranta University of Technology Lappeenranta,Finland
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1352-1356
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）