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contributor authorWen-Lung Fu
contributor authorLesley M. Wright
contributor authorJe-Chin Han
date accessioned2017-05-09T00:18:18Z
date available2017-05-09T00:18:18Z
date copyrightJanuary, 2005
date issued2005
identifier issn0889-504X
identifier otherJOTUEI-28717#164_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/132848
description abstractThis paper reports the heat transfer coefficients in two-pass rotating rectangular channels (AR=1:2 and AR=1:4) with rib roughened walls. Rib turbulators are placed on the leading and trailing walls of the two-pass channel at an angle of 45 deg to the flow direction. Four Reynolds numbers are considered from 5000 to 40 000. The rotation numbers vary from 0.0 to 0.3. The ribs have a 1.59 by 1.59 mm square cross section. The rib height-to-hydraulic diameter ratios (e/Dh) are 0.094 and 0.078 for AR=1:2 and AR=1:4, respectively. The rib pitch-to-height ratio (P/e) is 10 for both cases, and the inlet coolant-to-wall density ratio (Δρ/ρ) is maintained around 0.115. For each channel, two channel orientations are studied, 90 deg and 45 deg with respect to the plane of rotation. The results show that the rotation effect increased the heat transfer on trailing wall in the first pass, but reduced the heat transfer on the leading wall. For AR=1:4, the minimum heat transfer coefficient was 25% of the stationary value. However, the rotation effect reduced the heat transfer difference between the leading and trailing walls in the second pass.
publisherThe American Society of Mechanical Engineers (ASME)
titleHeat Transfer in Two-Pass Rotating Rectangular Channels (AR=1:2 and AR=1:4) With 45 Deg Angled Rib Turbulators
typeJournal Paper
journal volume127
journal issue1
journal titleJournal of Turbomachinery
identifier doi10.1115/1.1791649
journal fristpage164
journal lastpage174
identifier eissn1528-8900
keywordsRotation
keywordsFlow (Dynamics)
keywordsHeat transfer
keywordsChannels (Hydraulic engineering) AND Reynolds number
treeJournal of Turbomachinery:;2005:;volume( 127 ):;issue: 001
contenttypeFulltext


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