Numerical calculation and analysis of resistance performance of planing craft combining Savitsky method and overset grid technology

GUO Jun; HU Zhe; ZHU Ziwen; CHEN Zuogang; CUI Lianzheng; LI Guibin

doi:10.19693/j.issn.1673-3185.02417

Volume 17 Issue 3

Jun. 2022

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Chinese Journal of Ship Research > 2022 > 17(3): 126-134. > DOI: 10.19693/j.issn.1673-3185.02417 CSTR: 32390.14.j.issn.1673-3185.02417

GUO J, HU Z, ZHU Z W, et al. Numerical calculation and analysis of resistance performance of planing craft combining Savitsky method and overset grid technology[J]. Chinese Journal of Ship Research, 2022, 17(3): 126–134. DOI: 10.19693/j.issn.1673-3185.02417

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Numerical calculation and analysis of resistance performance of planing craft combining Savitsky method and overset grid technology

GUO Jun^1,,
HU Zhe^1,,
ZHU Ziwen^1,,
CHEN Zuogang^{2, 3, ,},
CUI Lianzheng^{2, 3},
LI Guibin⁴

1.
School of Marine Engineering, Jimei University, Xiamen 361021, China
2.
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
3.
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
4.
Science and Technology on Water Jet Propulsion Laboratory, Marine Design and Research Institute of China, Shanghai 200011, China

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Received Date: June 15, 2021
Revised Date: September 13, 2021
Available Online: September 14, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Abstract

Objective In this paper, the hydrostatic resistance of a planing craft is studied using the high-precision numerical simulation method to improve the numerical prediction accuracy.
Methods The three-dimensional viscous flow field of a planing craft in calm water is numerically simulated using the computational fluid dynamics (CFD) method combined with the Savitsky method and overset grid technique, and the flow field characteristics of the craft under different load coefficients and speeds are analyzed.
Results The calculated results of the resistance, sinkage and trim angle of the planing craft are in good agreement with the experimental results, and the spray phenomenon and distribution of water and air on the bottom of the craft are simulated normally, which shows that this method can accurately and effectively predict the resistance performance of planing craft. With the increase in the load coefficient, the peak value of the pressure coefficient on the keel increases, and the position of the pressure center moves forward. With the increase in speed, the peak value of the pressure coefficient on the keel decreases, the position of the pressure center gradually moves towards the stern, the angle between the stagnation line and the longitudinal section in the center plane decreases, the depth of the cavity behind the transom decreases, and the length of the cavity increases.
Conclusions This study provides an accurate and effective numerical calculation method for the resistance prediction of planing craft, and can provide technical support for the numerical study of the hydrodynamic performance of such craft.
- planing craft,
- resistance,
- computational fluid dynamics,
- overset grid,
- Savitsky method

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References (25)

References

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Numerical calculation and analysis of resistance performance of planing craft combining Savitsky method and overset grid technology

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