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Internal heat generation effects on the unsteady free convection in a square cavity filled with a porous medium
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2010 |
| Abstract | Natural convective heat transfer in fluid-saturated porous media has occupied the centre stage in many fundamental heat transfer analyses and has received considerable attention over the last several decades. This interest has been due to its wide range of applications in, for example, packed sphere beds, high performance insulation for buildings, chemical catalytic reactors, grain storage and such geophysical problems as frost heave. Porous media are also of interest in relation to the underground spread of pollutants, solar power collectors, and to geothermal energy systems. Porous materials, such as sand and crushed rock, which when underground are saturated with water, which, under the influence of local pressure gradients, migrates and transports energy through the material. Literature concerning convective flow in porous media is abundant. Representative studies in this are may be found in the recent books by Nield and Bejan (2006), Ingham and Pop (2005), Vafai (2005), Bejan et al. (2004) and Pop and Ingham (2001). Natural convection in an enclosure in which internal heat generation is present is of prime importance in certain technological applications. Examples are post-accident heat removal in nuclear reactors and geophysical problems associated with the underground storage of nuclear water, among others (Acharya and Goldstein, 1985; Ozoe and Maruo, 1987; Lee and Goldstein, 1988; Fusegi et al., 1992; Venkatachalappa and Subbaraya, 1993; Shim and Hyun, 1997; Hossain and Wilson, 2002; Hossain and Rees, 2005). Natural convection heat transfer in a cavity saturated with porous media in the presence of a magnetic field is a new branch of thermo-fluid mechanics. The heat transport phenomenon can be described by means of the hydrodynamics, the convective heat transfer mechanism and the electromagnetic field as they have a symbiotic relationship. The present study investigates the effects heat generation on the unsteady free convection in a square enclosure filled with a porous medium saturated by a viscous fluid. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.math.ubbcluj.ro/~tgrosan/Curs12.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
