Abstract
ABSTRACT Motion in waves is a crucial issue for planing craft safety and human comfort. Practically, a boat at sea may navigate in any heading angle with respect to wave directions. In this paper, the planing craft motion in regular oblique waves in a range of heading angles is investigated using computational fluid dynamics (CFD). The simulation is performed on two prismatic hulls in which slamming occurs on one hull, and the other one is in non-slamming condition. The simulation results are validated in comparison with the experiment in the head wave condition. Findings show that as the wave direction changes from the head to the oblique, heave, pitch and acceleration rapidly decrease while roll increases. Additionally, the impact acceleration becomes a quasi-periodic, and its amplitude drops at the same time. It is observed that the aforementioned influences are much more pronounced for the craft in slamming condition.
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