Influence factors of the flow field circumferential uniformity at the&nbsp;sector cascade outlet of compressor

WANG Huan; SUN Peng; XU Lin-feng; HUANG Long-sheng

doi:10.16411/j.cnki.issn1006-7736.2019.02.010

Journal of Dalian Maritime University >

2019 , Vol. 45 >Issue 2: 69 - 76

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.02.010

Influence factors of the flow field circumferential uniformity at the sector cascade outlet of compressor

WANG Huan ,
SUN Peng ,
XU Lin-feng ,
HUANG Long-sheng

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(Ship and Marine Engineering College ,Dalian Maritime University, Dalian 116026, China)

Received date: 2018-09-30

Revised date: 2018-11-18

Online published: 2018-11-18

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Abstract

Numerical simulation was used to study the influence of circumferential angle, structure of the guide plate and low-energy fluid suction on the sector cascade outlet uniformity and measurable number of runners. On the basis of considering the flow conditions in the laboratory wind tunnel, by comparing and analyzing the circumferential distribution of Mach number and flow angle at the outlet of guide vane and stator vane, the optimum design scheme of sector cascade was determined to be a design scheme with 110 degree sector circumferential angle, oblique guide plate and no suction. Results show that increasing the number of channels (sector angle) is helpful to improve the periodicity of sector cascade under the condition of subsonic flow, and the flow field with better periodicity can be obtained with inclined guide plate form and no suction scheme, and the number of measurable runner can be increased to 5.

Key words： compressor; sector cascade; periodicity; numerical simulation

Cite this article

WANG Huan , SUN Peng , XU Lin-feng , HUANG Long-sheng . Influence factors of the flow field circumferential uniformity at the sector cascade outlet of compressor[J]. Journal of Dalian Maritime University, 2019 , 45(2) : 69 -76 . DOI: 10.16411/j.cnki.issn1006-7736.2019.02.010

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