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contributor authorLi, Honglin;Xie, Feifan;Wang, Yaning;Wang, Chen;Yan, Yan;Cui, Jiahuan
date accessioned2023-04-06T13:01:12Z
date available2023-04-06T13:01:12Z
date copyright10/14/2022 12:00:00 AM
date issued2022
identifier issn19485085
identifier othertsea_15_1_011015.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4288931
description abstractThe laminated cooling is believed to be a promising cooling scheme for the next generation of advanced gas turbines. In order to build a cooling system with high performance, it is necessary to develop a more revolutionary cooling configuration for hot components in gas turbines. In this study, a novel laminated cooling configuration with cellular partition has been proposed. The local/average heat transfer parameters and pressure loss coefficient have been evaluated by comparing with traditional laminated cooling configurations with and without circular pin. Different adiabatic and conjugate cooling configurations are explored numerically to investigate the external film coverage and internal heat transfer. Seven different flow conditions with blowing ratios ranging from 0.2 to 1.4 are investigated for all numerical models. Results indicate that the novel laminated cooling configuration exhibits a higher cooling advantage. With the blowing ratios investigated, the cooling effectiveness of laminated cooling configuration with cellular partition increased by 4.5–13.4% and 10.8–23.4% compared with the cases with and without circular pin, respectively. With higher cooling performance, the pressure loss coefficient only increased by 4.4%. Two mechanisms have been identified for heat transfer enhancement of the novel laminated cooling configuration: (1) the cellular partition increases the transverse diffusion of film cooling outflow resulting in an increased external film cooling effectiveness and (2) the film hole area and partition area have been increased in the new structure, which enhances the internal heat transfer. The proposed structure has the potential for cooling the highpressure turbines in the future.
publisherThe American Society of Mechanical Engineers (ASME)
titleNumerical Investigation on the Cooling Effectiveness and Pressure Loss of a Novel Laminated Cooling Configuration With Cellular Partition
typeJournal Paper
journal volume15
journal issue1
journal titleJournal of Thermal Science and Engineering Applications
identifier doi10.1115/1.4055744
journal fristpage11015
journal lastpage1101514
page14
treeJournal of Thermal Science and Engineering Applications:;2022:;volume( 015 ):;issue: 001
contenttypeFulltext


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