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Journal of System Simulation

Abstract

Abstract: Addressing the challenges of achieving extreme operating conditions and understanding the boundary conditions of yaw performance in offshore yaw tests for amphibious vehicles, a heading-flow direction angle mapping analysis method based on computational fluid dynamics (CFD) simulation and a three-dimensional hydrodynamic stratified model is proposed. Under environmental conditions of second-level (wave height of 0.5 m, wind speed of 3.3 m/s) and third-level (wave height of 1.0 m, wind speed of 5.1 m/s) sea states, a hundred-meter yaw test is simulated to reveal the nonlinear evolution law of yaw displacement and heading-flow direction angle. The research indicates that the extreme yaw displacement under sea state 2 is 4.94 m, meeting the heading maintenance requirements; under sea state 3, the extreme yaw displacement reaches 5.92 m, exceeding the critical threshold. A quartic polynomial mapping model within the range of 0~ 90° is established through data fitting (fitting accuracy of 99.83%), determining that the boundary condition for the yaw displacement not exceeding the limit under sea state 3 is a heading-flow direction angle less than 80.4°. This method provides a quantitative basis and a priori verification method for the evaluation and test design of offshore yaw performance of amphibious vehicles.

First Page

2647

Last Page

2658

CLC

TJ811+.6; TP391.9

Recommended Citation

Zhong Yue, Ji Wenlong, Feng Shiqi, et al. Research on Simulation Technology of Sea Yawing Test for Amphibious Vehicles[J]. Journal of System Simulation, 2026, 38(9): 2647-2658.

Corresponding Author

Ji Wenlong

DOI

10.16182/j.issn1004731x.joss.25-1035

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