Title of article :
Cooling transients in a sudden-expansion channel with varied rates of wall transpiration
Author/Authors :
Go-Long Tsai، نويسنده , , Y.C. Lin، نويسنده , , H.W. Wang، نويسنده , , Y.F. Lin، نويسنده , , YC Su، نويسنده , , J.T. Yang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
10
From page :
5990
To page :
5999
Abstract :
The transient cooling process in a sudden-expansion channel with the injection of cold air from the porous bottom wall is investigated experimentally. Four cooling patterns are categorized based on the structure of the corner eddy and the recirculation zone. Two mechanisms, porous-wall cooling and film cooling, are proposed to interpret the transition of the cooling patterns as the rate of wall injection is increased. At the early phase of wall injection, both the reattachment effect and the increased coolant injection induced by the low-pressure center are considered to produce the two maxima in spatial distributions of the Stanton number.
Keywords :
Backstep , Sudden-expansion channel , Transpiration cooling
Journal title :
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Serial Year :
2009
Journal title :
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Record number :
1076389
Link To Document :
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