Research of numerical prediction and simulation for ship heave and pitch motions in regular waves

ZHANG Teng, ZHANG Zhenhua, XUE Fanyan, LI Rui, SHEN Shuai, ZHAI Xiaofeng

doi:10.16411/j.cnki.issn1006-7736.2025.02.003

Journal of Dalian Maritime University >

2025 , Vol. 51 >Issue 2: 22 - 31

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2025.02.003

Research of numerical prediction and simulation for ship heave and pitch motions in regular waves

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(North Automatic Control Technology Institute, Taiyuan 030006, China)

Online published: 2025-04-28

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Abstract

To provide maritime simulator with the reliable and applicable ship heave and pitch motion mathematical model in waves, avoid the influence of irregular frequency of Frank source and sink distribution method within the two-dimensional strip theory, high precision fitting of ship’s transverse sections was carried out based on the multi-parameter conformal mapping method, the integration of the hydrodynamic coefficient and the wave exciting force of the ship's transverse sections was carried out by the STF(Salvesen-Tuck-Faltinsen) method, the Abkowitz model was adopted for the maneuverability motion equations considering the interaction among ship, propeller and rudder, and the numerical prediction of the ship heave and pitch motion in regular waves under the maneuvering conditions can be realized. The Mariner vessel was used as the simulation case at a Froude number of 0.2: when the Mariner vessel sails in head waves, the relative errors between the calculated results and the experimental results is less than 8.8% for heave amplitude operators, and the relative errors between the calculated results and the test results is less than 12.9% for pitch amplitude operators, and the calculated results and the experimental results show the same variation trend; when the wave angle range is ~ ，the calculated results of the heave and pitch motion amplitude are symmetrical with respect to the wave angle of , the calculated results of heave motion amplitude tend to be constant with the increase of wavelength; when the Mariner vessel carries out a turning circle in regular waves, the time for computer operation is 609.3 seconds when carrying out turning maneuvers for 3000 seconds, which can satisfy the real-time requirements of maritime simulator. The ship heave and pitch motion mathematical model is applied to Mariner vessel and connected to the visual system of maritime simulator, which is proved effective and applicable to the maritime simulator.

Key words： maritime simulator; heave and pitch motion mathematical model; multi-parameter conformal mapping method; hydrodynamic coefficient; real-time

Cite this article

ZHANG Teng, ZHANG Zhenhua, XUE Fanyan, LI Rui, SHEN Shuai, ZHAI Xiaofeng . Research of numerical prediction and simulation for ship heave and pitch motions in regular waves[J]. Journal of Dalian Maritime University, 2025 , 51(2) : 22 -31 . DOI: 10.16411/j.cnki.issn1006-7736.2025.02.003

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