@inproceedings{5a10d69bc5b64de1a444d06d9f4e99f5,
title = "Investigation of heat transfer and fluid flow over pocket cavity in the rear part of gas turbine",
abstract = "The pocket cavity is generated at the transition part between the low pressure turbine (LPT) and outlet guide vane (OGV) in a gas turbine engine. Because the important connection with OGV, the heat transfer and fluid flow need to be investigated and analyzed. In the present work, a simplified triangular pocket cavity is built and heat transfer and fluid flow are investigated experimentally and numerically. Liquid Crystal Thermography (LCT) is employed to measure the heat transfer over the pocket surface with Reynolds number ranging from 54,054 to 135,135. In addition, two fillets with different radii are designed to investigate the flow structures over the pocket surface. The turbulent flow details are provided by numerically calculations based on the commercial software Fluent 15.0 with a validated turbulence model. Based on the results, the highest heat transfer value is located in the downstream boundary of the pocket cavity where the strongest flow impingement happens. The smaller fillet radius presents a higher heat transfer peak value and also induces stronger recirculating flow inside the pocket cavity. Considering the design requirement in the rear part of a gas turbine, i.e., to decrease the heat transfer peak value, a larger fillet radius is recommended for practical design. The heat transfer and flow details also provide a reliable reference for gas turbine engine design.",
keywords = "Fillet radius, Flow impingement, LCT, Peak value, Pocket cavity, Turbulence model",
author = "Jian Liu and Chenglong Wang and Lei Wang and Gongnan Xie and Martin Andersson and Bengt Sund{\'e}n and Hans Abrahamsson and Carlos Arroyo",
note = "Publisher Copyright: Copyright {\textcopyright} 2016 by ASME.; ASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016 ; Conference date: 11-11-2016 Through 17-11-2016",
year = "2016",
doi = "10.1115/IMECE201666059",
language = "英语",
series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Heat Transfer and Thermal Engineering",
}