This paper presents a smoothed particle hydrodynamics (SPH) modeling technique based on the cylindrical coordinates for axisymmetrical hydrodynamic applications, thus to avoid a full three-dimensional (3D) numerical scheme as required in the Cartesian coordinates. In this model, the governing equations are solved in an axisymmetric form and the SPH approximations are modified into a two-dimensional cylindrical space. The proposed SPH model is first validated by a dam-break flow induced by the collapse of a cylindrical column of water with different water height to semi-base ratios. Then, the model is used to two benchmark water entry problems, i.e., cylindrical disk and circular sphere entry. In both cases, the model results are favorably compared with the experimental data. The convergence of model is demonstrated by comparing with the different particle resolutions. Besides, the accuracy and efficiency of the present cylindrical SPH are also compared with a fully 3D SPH computation. Extensive discussions are made on the water surface, velocity, and pressure fields to demonstrate the robust modeling results of the cylindrical SPH.
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July 2019
Research-Article
Cylindrical Smoothed Particle Hydrodynamics Simulations of Water Entry
Kai Gong,
Kai Gong
Department of Mechanical Engineering,
National University of Singapore,
1 Engineering Drive 2,
Singapore 117576
e-mail: mpegk@nus.edu.sg
National University of Singapore,
1 Engineering Drive 2,
Singapore 117576
e-mail: mpegk@nus.edu.sg
Search for other works by this author on:
Songdong Shao,
Songdong Shao
Department of Civil and Structural Engineering,
University of Sheffield,
Sheffield, S1 3JD, UK;
University of Sheffield,
Sheffield, S1 3JD, UK;
College of Shipbuilding Engineering,
Harbin Engineering University,
Harbin 150001, China
e-mail: s.shao@sheffield.ac.uk
Harbin Engineering University,
Harbin 150001, China
e-mail: s.shao@sheffield.ac.uk
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Hua Liu,
Hua Liu
Department of Engineering Mechanics,
MOE Key Laboratory of Hydrodynamics,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hliu@sjtu.edu.cn
MOE Key Laboratory of Hydrodynamics,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hliu@sjtu.edu.cn
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Pengzhi Lin,
Pengzhi Lin
State Key Laboratory of Hydraulics and
Mountain River Engineering,
Sichuan University,
Chengdu 610065, China
e-mail: cvelinpz@scu.edu.cn
Mountain River Engineering,
Sichuan University,
Chengdu 610065, China
e-mail: cvelinpz@scu.edu.cn
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Qinqin Gui
Qinqin Gui
Faculty of Maritime and Transportation,
Ningbo University,
Ningbo 315211, China
e-mail: guiqinqin@nbu.edu.cn
Ningbo University,
Ningbo 315211, China
e-mail: guiqinqin@nbu.edu.cn
Search for other works by this author on:
Kai Gong
Department of Mechanical Engineering,
National University of Singapore,
1 Engineering Drive 2,
Singapore 117576
e-mail: mpegk@nus.edu.sg
National University of Singapore,
1 Engineering Drive 2,
Singapore 117576
e-mail: mpegk@nus.edu.sg
Songdong Shao
Department of Civil and Structural Engineering,
University of Sheffield,
Sheffield, S1 3JD, UK;
University of Sheffield,
Sheffield, S1 3JD, UK;
College of Shipbuilding Engineering,
Harbin Engineering University,
Harbin 150001, China
e-mail: s.shao@sheffield.ac.uk
Harbin Engineering University,
Harbin 150001, China
e-mail: s.shao@sheffield.ac.uk
Hua Liu
Department of Engineering Mechanics,
MOE Key Laboratory of Hydrodynamics,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hliu@sjtu.edu.cn
MOE Key Laboratory of Hydrodynamics,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hliu@sjtu.edu.cn
Pengzhi Lin
State Key Laboratory of Hydraulics and
Mountain River Engineering,
Sichuan University,
Chengdu 610065, China
e-mail: cvelinpz@scu.edu.cn
Mountain River Engineering,
Sichuan University,
Chengdu 610065, China
e-mail: cvelinpz@scu.edu.cn
Qinqin Gui
Faculty of Maritime and Transportation,
Ningbo University,
Ningbo 315211, China
e-mail: guiqinqin@nbu.edu.cn
Ningbo University,
Ningbo 315211, China
e-mail: guiqinqin@nbu.edu.cn
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received February 10, 2018; final manuscript received December 17, 2018; published online January 30, 2019. Assoc. Editor: Oleg Schilling.
J. Fluids Eng. Jul 2019, 141(7): 071303 (12 pages)
Published Online: January 30, 2019
Article history
Received:
February 10, 2018
Revised:
December 17, 2018
Citation
Gong, K., Shao, S., Liu, H., Lin, P., and Gui, Q. (January 30, 2019). "Cylindrical Smoothed Particle Hydrodynamics Simulations of Water Entry." ASME. J. Fluids Eng. July 2019; 141(7): 071303. https://doi.org/10.1115/1.4042369
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