Study on the effects of end-bend cantilevered stator in a 2-stage axial compressor |
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Authors: | Songtao Wang Xin Du Zhongqi Wang |
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Affiliation: | (1) Harbin Institute of Technology, P.O. BOX 458, Harbin, 150001, China |
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Abstract: | Leading edge recambering is applied to the cantilevered stator vanes in a 2-stage compressor in this paper. Different curving
effects are produced when the end-bend stator vanes are stacked in different ways. Stacking on the leading edge induces a
positive curving effect near the casing. When it is stacked on the centre of gravity, a negative curving effect takes place.
The numerical investigation shows that the flow field is redistributed when the end-bend stators with leading edge stacking
are applied. The variations in the stage matching for the mainstream and near the hub have an impact on the performance of
the 2-stage compressor. The isentropic efficiency and the total pressure ratio of the compressor are increased near the design
condition. The compressor total pressure ratio is decreased near choke and near stall. The maximum flow rate is reduced and
the stall margin is decreased. |
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Keywords: | axial compressor end-bend blade stacking stage matching |
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