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RISS 인기검색어
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- 저자 : Jayesh Subhash Chordiya (검색결과 1 건)
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Jayesh Subhash Chordiya,Ram Vinoy Sharma 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.5
Partitions in porous enclosure have been observed to offer a key solution for reduction of heat transfer rate across it. However, very little is known about the effect of its shape, position and orientation within the porous enclosure, which seems to be an important consideration for thermal designers. The present numerical investigation reports the effect of a corrugated diathermal partition within a fluid saturated porous enclosure. The objective is to comprehend the effect of the amplitude of the corrugated partition (0.05 ≤ A ≤ 0.25) and position of the partition (0.2 ≤ D ≤ 0.8) for various values of Darcy-modified Rayleigh number (10 ≤ Ra ≤ 1000) on natural convection fluid flow and heat transfer. An overall II-order finite difference method has been used to solve the Darcy model for porous media using successive accelerated replacement scheme. It is found that value of amplitude for which the least value of Nusselt number is obtained shifts to a lower side as value of modified Rayleigh number increases i.e., amplitude decreases from 0.16 to 0.025 as Ra changes from 100 to 1000. For higher values of Rayleigh number, the reduction in Nusselt number is about 61% with respect to porous enclosure without partition, which is very substantial.
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