| Recent Developments in Cooling Using Blowing |
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| 引用本文： | F. Bataille,L. Mathelin,A. Lallemand Centre de Thermique de Lyon,UMR CNRS 5008,INSA de Lyon,France. Recent Developments in Cooling Using Blowing[J]. 清华大学学报, 2002, 7(2) |
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| 作者姓名： | F. Bataille L. Mathelin A. Lallemand Centre de Thermique de Lyon UMR CNRS 5008 INSA de Lyon France |
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| 作者单位： | F. Bataille，L. Mathelin，A. Lallemand Centre de Thermique de Lyon，UMR CNRS 5008，INSA de Lyon，France |
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| 摘 要： | IntroductionThe increase of the efficiency for engines such asgas turbine or rocket engines requires an importantrise in the combustion gas temperature.Thesurfaces,which are in contact with these gases,are submitted to high thermal constraints,in manycases not admissible by the materials. Petot[1]described the evolution of the engines according tothe inlettemperature of the gas turbine.In the gasturbine,the gas temperature can reach 1 5 0 0 Kwhich is higher than the admissible temperature ofm…
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Recent Developments in Cooling Using Blowing |
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| F.Bataille,L.Mathelin,A.Lallemand. Recent Developments in Cooling Using Blowing[J]. Tsinghua Science and Technology, 2002, 7(2) |
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| Authors: | F.Bataille L.Mathelin A.Lallemand |
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| Abstract: | Influence of the blowing through a porous flat plate and a circular cylinder has been studied. Experimental and numerical results agree and show a thickening of the boundary layers, both dynamic and thermal. The thermal protection effectiveness has been quantified for the two geometries, and comparisons between discrete injection and blowing, in the case of the flat plate, were carried out, showing a stronger impact of the latter. Finally, the blowing influence on the primary instability properties results in a decrease of the vortex shedding frequency and a modification of the shear layer. |
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| Keywords: | blowing cooling flat plate circular cylinder |
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