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    Heat Transfer in Trailing Edge Wedge-Shaped Pin-Fin Channels With Slot Ejection Under High Rotation Numbers

    Source: Journal of Thermal Science and Engineering Applications:;2011:;volume( 003 ):;issue: 002::page 21007
    Author:
    Akhilesh P. Rallabandi
    ,
    Yao-Hsien Liu
    ,
    Je-Chin Han
    DOI: 10.1115/1.4003746
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The heat transfer characteristics of a rotating pin-fin roughened wedge-shaped channel have been studied. The model incorporates ejection through slots machined on the narrower end of the wedge, simulating a rotor blade trailing edge. The copper plate regional average method is used to determine the heat transfer coefficient; pressure taps have been used to estimate the flow discharged through each slot. Tests have been conducted at high rotation (≈1) and buoyancy (≈2) numbers, in a pressurized rotating rig. Reynolds numbers investigated range from 10,000 to 40,000 and inlet rotation numbers range from 0 to 0.8. Pin-fins studied are made of copper. Results show high heat transfer in the proximity of the slot. A significant enhancement in heat transfer due to the pin-fins, compared with a smooth channel, is observed. Results also show a strong rotation effect, increasing significantly the heat transfer on the trailing surface and reducing the heat transfer on the leading surface.
    keyword(s): Heat transfer , Copper , Channels (Hydraulic engineering) , Reynolds number , Rotation , Flow (Dynamics) , Fins , Wedges , Heat transfer coefficients , Buoyancy AND Plates (structures) ,
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      Heat Transfer in Trailing Edge Wedge-Shaped Pin-Fin Channels With Slot Ejection Under High Rotation Numbers

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/147644
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    • Journal of Thermal Science and Engineering Applications

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    contributor authorAkhilesh P. Rallabandi
    contributor authorYao-Hsien Liu
    contributor authorJe-Chin Han
    date accessioned2017-05-09T00:47:02Z
    date available2017-05-09T00:47:02Z
    date copyrightJune, 2011
    date issued2011
    identifier issn1948-5085
    identifier otherJTSEBV-28830#021007_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/147644
    description abstractThe heat transfer characteristics of a rotating pin-fin roughened wedge-shaped channel have been studied. The model incorporates ejection through slots machined on the narrower end of the wedge, simulating a rotor blade trailing edge. The copper plate regional average method is used to determine the heat transfer coefficient; pressure taps have been used to estimate the flow discharged through each slot. Tests have been conducted at high rotation (≈1) and buoyancy (≈2) numbers, in a pressurized rotating rig. Reynolds numbers investigated range from 10,000 to 40,000 and inlet rotation numbers range from 0 to 0.8. Pin-fins studied are made of copper. Results show high heat transfer in the proximity of the slot. A significant enhancement in heat transfer due to the pin-fins, compared with a smooth channel, is observed. Results also show a strong rotation effect, increasing significantly the heat transfer on the trailing surface and reducing the heat transfer on the leading surface.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleHeat Transfer in Trailing Edge Wedge-Shaped Pin-Fin Channels With Slot Ejection Under High Rotation Numbers
    typeJournal Paper
    journal volume3
    journal issue2
    journal titleJournal of Thermal Science and Engineering Applications
    identifier doi10.1115/1.4003746
    journal fristpage21007
    identifier eissn1948-5093
    keywordsHeat transfer
    keywordsCopper
    keywordsChannels (Hydraulic engineering)
    keywordsReynolds number
    keywordsRotation
    keywordsFlow (Dynamics)
    keywordsFins
    keywordsWedges
    keywordsHeat transfer coefficients
    keywordsBuoyancy AND Plates (structures)
    treeJournal of Thermal Science and Engineering Applications:;2011:;volume( 003 ):;issue: 002
    contenttypeFulltext
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