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contributor authorSheng, Xiaoying
contributor authorLu, Xingen
contributor authorLi, Ziliang
contributor authorWu, Yunfeng
contributor authorYuan, Hang
contributor authorYang, Chengwu
date accessioned2025-04-21T10:10:58Z
date available2025-04-21T10:10:58Z
date copyright10/8/2024 12:00:00 AM
date issued2024
identifier issn0889-504X
identifier otherturbo_147_3_031001.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305659
description abstractThe geometric structure of the supersonic through-flow variable-pitch tandem fan poses challenges in ensuring optimal relative blade positions across various operating modes. This study employed numerical simulations to investigate the impact of axial overlap and percent pitch on the aerodynamic performance of fan in typical modes. Furthermore, it delved into the intricate interplay between the front and rear blades, offering detailed insights into the selection principles governing the relative blade positions in the supersonic through-flow variable-pitch tandem fan. The findings underscored the pivotal role of percent pitch based on chord direction in fan's aerodynamic performance. Specifically, supersonic and transonic modes exhibited superior performance when chord direction percent pitch was set at 10% and 100%, respectively. The key factor contributing to these lower losses was the influence of low-speed fluid from the wake of the front blade, which weakened the shock boundary layer interaction on the rear blade's surface. In the high-speed windmilling mode, within the confines of geometric constraints, higher percent pitch based on chord direction values corresponded to reduced losses. This outcome was primarily attributable to the gap-blocking effect, which diminished the shock boundary layer interaction on the rear blade's pressure side and improved the wake of the rear blade. However, in this mode, the loss demonstrated a positive correlation with the pressure ratio. Consequently, the selection of the relative blade position required a delicate balance between the competing demands of these two factors.
publisherThe American Society of Mechanical Engineers (ASME)
titleThe Matching Mechanism and Flow Mechanisms of Supersonic Through-Flow Variable-Pitch Tandem Cascade
typeJournal Paper
journal volume147
journal issue3
journal titleJournal of Turbomachinery
identifier doi10.1115/1.4066507
journal fristpage31001-1
journal lastpage31001-19
page19
treeJournal of Turbomachinery:;2024:;volume( 147 ):;issue: 003
contenttypeFulltext


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