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Effect of blockage ...
Effect of blockage configuration on film cooling with and without mist injection
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- Tian, Ke (författare)
- Hebei University of Technology
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- Wang, Jin (författare)
- Hebei University of Technology,Tianjin University
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- Liu, Chao (författare)
- Hebei University of Technology
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- Yang, Li (författare)
- Hebei University of Technology
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- Sundén, Bengt (författare)
- Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska 10 s.
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Ingår i: Energy. - : Elsevier BV. - 0360-5442. ; 153, s. 661-670
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Film cooling, as an effective protection technology, is widely applied in gas turbines to prevent components like vane blades from the hot mainstream. However, ash and other contaminants contained in the gas easily deposit on blade surfaces, which results in blockages inside the film holes and a reduction of the coverage area of the coolant air. Two blockage configurations (hemispherical and tetrahedral blockages) with a similar blockage ratio are analyzed in this study. In addition, mist injection with three droplet sizes (1 μm, 5 μm and 10 μm) is also considered. It is found that the position of the blockage configuration shows almost no influence on the cooling performance. In addition, the hemispherical blockage configuration results in a lower lateral film cooling effectiveness than the tetrahedral one. Finally, it is also concluded that the 5 μm droplet case shows more uniform distribution than other cases.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Blockage
- Droplet size
- Film cooling
- Gas turbine
- Mist cooling
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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