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Experimental investigation of liquid film cooling in hypersonic flow
Yuan CK(苑朝凯)1; Li JP(李进平)1; Jiang ZL(姜宗林)1,2; Yu HR(俞鸿儒)1
Corresponding AuthorLi, Jinping(
Source PublicationPHYSICS OF FLUIDS
AbstractFilm cooling is generally considered as a promising active cooling technology for developing thermal protection systems of hypersonic vehicles; however, most of experimental and numerical studies of film cooling mainly concentrated on gaseous film cooling. Since the phase change of liquid coolants can absorb a large amount of latent heat, liquid film cooling should have more potential advantages, especially for severe environments accompanied by hypersonic flight To address this issue, the film cooling using water as a coolant was experimentally investigated in hypersonic flow. Experiments were carried out in a detonation tunnel, at a hypersonic Mach number of 6 using a 25 degrees apex-angle wedge. Characteristic physical quantities, such as surface temperature rise, shock wave structure, film thickness, and cover area, are measured by thermocouples, schlieren, and a specially devised liquid film measurement system. The experimental results verify that the liquid film cooling is feasible in hypersonic flow and also indicate that it is featured with maintaining aerodynamic performances due to the weak effect on the main flow caused by coolant injection. Inspired by these results, liquid film flow characteristics and its influencing factors including mass flow rate, dynamic pressure, coolant injection direction, and surface tension are investigated to guide the design of a thermal protection system. Published under license by AIP Publishing.
Indexed BySCI ; EI
WOS IDWOS:000466701800056
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding ProjectNational Natural Science Foundation of China[11602275] ; National Natural Science Foundation of China[11672312] ; National Natural Science Foundation of China[11532014]
Funding OrganizationNational Natural Science Foundation of China
ContributorLi, Jinping
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yuan CK,Li JP,Jiang ZL,et al. Experimental investigation of liquid film cooling in hypersonic flow[J]. PHYSICS OF FLUIDS,2019,31(4):10.
APA 苑朝凯,李进平,姜宗林,&俞鸿儒.(2019).Experimental investigation of liquid film cooling in hypersonic flow.PHYSICS OF FLUIDS,31(4),10.
MLA 苑朝凯,et al."Experimental investigation of liquid film cooling in hypersonic flow".PHYSICS OF FLUIDS 31.4(2019):10.
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