年間 8 号発行
ISSN 印刷: 1065-5131
ISSN オンライン: 1563-5074
Indexed in
EXPERIMENTAL STUDY OF PRESSURE DROP AND HEAT TRANSFER IN A U-BEND CHANNEL WITH VARIOUS GUIDE VANES AND RIBS
要約
An experimental study was conducted to investigate pressure drop and heat transfer in a U-bend section with various configurations of guide vanes and two kinds of rib shapes on the outer wall. Ten guide vane types were tested. Results highlight that the use of special guide vanes can reduce the pressure drop penalty up to a maximum of 31%. However, guide vanes are usually associated with heat transfer reduction. To further enhance heat transfer, transverse and V-shaped ribs were attached on the outer wall. Thermal performance evaluation showed that the 45° V-shaped downstream-pointing ribs coupled with guide vane configuration 5 give the best thermal performance. The results of this study can be employed to improve the internal design of modern gas turbine blade cooling systems.
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Zhao Zhiqi, Luo Lei, Qiu Dandan, Wang Songtao, Wang Zhongqi, Sundén Bengt, On the topology of vortex structures and heat transfer of a gas turbine blade internal tip with different arrangement of delta-winglet vortex generators, International Journal of Thermal Sciences, 160, 2021. Crossref
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Luo Lei, Zhao Zhiqi, Kan Xiaoxu, Qiu Dandan, Wang Songtao, Wang Zhongqi, On the Heat Transfer and Flow Structures’ Characteristics of the Turbine Blade Tip Underside With Dirt Purge Holes at Different Locations by Using Topological Analysis, Journal of Turbomachinery, 141, 7, 2019. Crossref
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Zhao Zhiqi, Luo Lei, Du Wei, Wang Songtao, Zhou Xun, Sundén Bengt, Experimental study on the augmented Nusselt number of the endwall through a square-sectioned sharp-turn channel using novel heat exchanger, International Journal of Heat and Mass Transfer, 192, 2022. Crossref
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Zhao Zhiqi, Luo Lei, Zhou Xun, Wang Songtao, Wang Zhongqi, Sundén Bengt, Analysis of enhanced turbulent heat transfer in a sharp turn channel having novel designed endwall with longitudinal vortex generator, International Communications in Heat and Mass Transfer, 131, 2022. Crossref
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Luo Lei, Zhao Zhiqi, Qiu Dandan, Wang Songtao, Wang Zhongqi, Sundén Bengt, An experimental investigation on the thermal augmentation of internal endwall in a two-pass duct using an array of delta-winglet vortex generator pair, International Journal of Heat and Mass Transfer, 182, 2022. Crossref
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