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Journal of Porous Media
Impact-faktor: 1.061 5-jähriger Impact-Faktor: 1.151 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.2015012159
pages 1047-1057

INVESTIGATION OF SUPERSONIC TRANSPIRATION COOLING THROUGH SINTERED METAL POROUS FLAT PLATES

Zheng Huang
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
Yin-hai Zhu
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
Yan-bin Xiong
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China; Beijing Institute of Astronautical System Engineering, Beijing 100076, China
Pei-Xue Jiang
Beijing Key Laboratory for CO2 Utilization and Reduction Technology; Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

ABSTRAKT

The flow and heat transfer characteristics of supersonic transpiration cooling through sintered porous flat plates were investigated experimentally and numerically. The experiments were conducted in a Mach 2.8 wind tunnel with air as the main flow and coolant. The porous wall temperatures were measured with an infrared camera and the flow field was observed with a Schlieren imaging system. Influences of coolant blowing ratio and porous matrix thermal conductivity on the cooling efficiency were analyzed, which showed that the surface temperatures were reduced significantly with a small amount of coolant injection rate. Moreover, a higher thermal conductivity of the porous matrix improved the cooling effect and the surface temperature uniformity. The Schlieren images showed that an oblique shock wave induced by the blockage effect of the injected coolant and the shock wave intensity increased with the increasing coolant blowing ratio.


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