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Title:
EXPERIMENTAL AND NUMERICAL STUDY OF THE CLOUD CAVITATING FLOW AROUND A SLENDER CYLINDER WITH A PETALS-SHAPED SECTION
Author: Wang YW(王一伟); Huang J(黄荐); Xu C(徐畅); Yu C(余超); Huang CG(黄晨光); Wu XC(吴小翠)
Issued Date: 2017
Conference Name: ASME Fluids Engineering Division Summer Meeting
Conference Date: JUL 30-AUG 03, 2017
Conference Place: Waikoloa, HI
Abstract: Three-dimensional flow structures of sheet-to-cloud transition have attracted a lot of attentions in the past years. Cloud cavitating flow around a slender cylinder with the petals shaped section was investigated by experimental and numerical methods. The experiment was performed in a launching system on the basis of the SHPB technology with a high-speed camera. The numerical method was established with large-eddy simulation (LES) and volume of fraction (VOF) approach. Numerical results agree well with experimental data. Interesting phenomena of three-dimensional evolution are observed, especially in which the U-type shedding of cavities are generated repeatedly in the channels along the inner region. Analysis of the unsteady evolution of cavitatingflow is performed, and emphasis is placed on the study of the relationship between flow structures around the ridges and channels. Results demonstrate that the pressure gradient variation in the tangential direction of the cylinder is essential for the unsteady development of the cavity including re-entry jet and local shedding. Interactions between the cavity and vortex are also analyzed, which indicates that the U-type cavity/vortex shedding is jointly induced by the re-entry jet and tangential vortex.
Keyword: LARGE-EDDY SIMULATION ; HYDROFOIL ; PROPELLER ; SURFACE
Indexed Type: CPCI-S ; EI
Corresponding Author: Wang, YW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China. ; Wang, YW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
Sponsorship: The authors are grateful for the support of the National Natural Science Foundation of China through grant numbers 11202215 and 11332011. This project was also supported by the Youth Innovation Promotion Association CAS (2015015).
Source: PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2017, VOL 2
Publisher: AMER SOC MECHANICAL ENGINEERS
Publish Place: NEW YORK
Language: 英语
WOS ID: WOS:000417224300004
ISBN: 978-0-7918-5808-0
Citation statistics:
Content Type: 会议论文
URI: http://dspace.imech.ac.cn/handle/311007/72177
Appears in Collections:流固耦合系统力学重点实验室(2012-)_会议论文

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description.institution: 1.[Wang, Yiwei
2.Huang, Jian
3.Xu, Chang
4.Yu, Chao
5.Huang, Chenguang
6.Wu, Xiaocui] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China
7.[Wang, Yiwei
8.Huang, Jian
9.Xu, Chang
10.Yu, Chao
11.Huang, Chenguang
12.Wu, Xiaocui] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China

Recommended Citation:
Wang YW,Huang J,Xu C,et al. EXPERIMENTAL AND NUMERICAL STUDY OF THE CLOUD CAVITATING FLOW AROUND A SLENDER CYLINDER WITH A PETALS-SHAPED SECTION[C]. 见:ASME Fluids Engineering Division Summer Meeting. Waikoloa, HI. JUL 30-AUG 03, 2017
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