Improvements of film cooling effectiveness by using Barchan dune shaped ramps
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- 作者：Wenwu Zhou ; Hui Hu ; huhui@iastate.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Film cooling ; Barchan-dune-shaped ramps ; Cooling effectiveness quantification ; PIV measurements ; PSP technique ; Mass transfer analog
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：103
- 期：Complete
- 页码：443-456
- 全文大小：5646 K
文摘
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A Barchan-dune-shaped-ramp (BDSR) film cooling concept was explored experimentally.
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PSP technique was used to quantify cooling effectiveness based on mass transfer analog.
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50–100% improvement in film cooling effectiveness was achieved with the BDA design.
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Down-wash flow induced by BDSR was found to enhance film cooling effectiveness.
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Both the location and height of the BDSR would affect the cooling performance.