LAPSE:2021.0094
Published Article
LAPSE:2021.0094
Numerical Study on the Influence of Step Casing on Cavitating Flows and Instabilities in Inducers with Equal and Varying Pitches
Lu Yu, Haochen Zhang, Hui Chen, Zhigang Zuo, Shuhong Liu
March 1, 2021
It is known that cavitating flow characteristics and instabilities in inducers can greatly impact the safety and stability of a liquid rocket. In this paper, step casing optimization design (Model OE and Model AE) was carried out for two three-bladed inducers with an equal (Model O) and a varying pitch (Model A), respectively. The unsteady cavitation flow field and accompanied instabilities were studied via numerical simulations. Reductions of the cavity size and fluctuation were observed in cases with a step casing. A significant difference in cavity structures was seen as well. Referring to the pressure distributions on the blades and details of the flow field, the mechanism of cavitation suppression was revealed. This work provides a feasible and convenient method in engineering practice for optimizing the characteristic of the cavitating flow field and instabilities for the inducer.
Keywords
cavitating flow and instabilities, inducer, step casing, varying pitch
Suggested Citation
Yu L, Zhang H, Chen H, Zuo Z, Liu S. Numerical Study on the Influence of Step Casing on Cavitating Flows and Instabilities in Inducers with Equal and Varying Pitches. (2021). LAPSE:2021.0094
Author Affiliations
Yu L: Department of Energy and Power Engineering, State Key Laboratory of Hydroscience and Engineering Laboratory, Tsinghua University, Beijing 100084, China
Zhang H: Department of Energy and Power Engineering, State Key Laboratory of Hydroscience and Engineering Laboratory, Tsinghua University, Beijing 100084, China
Chen H: Science and Technology on Liquid Rocket Engine Laboratory, Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Zuo Z: Department of Energy and Power Engineering, State Key Laboratory of Hydroscience and Engineering Laboratory, Tsinghua University, Beijing 100084, China; Yantai Research Institute and Graduate School, Harbin Engineering University, Yantai 264010, China
Liu S: Department of Energy and Power Engineering, State Key Laboratory of Hydroscience and Engineering Laboratory, Tsinghua University, Beijing 100084, China
Journal Name
Processes
Volume
8
Issue
9
Article Number
E1103
Year
2020
Publication Date
2020-09-04
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8091103, Publication Type: Journal Article
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LAPSE:2021.0094
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doi:10.3390/pr8091103
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Mar 1, 2021
 
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Calvin Tsay
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