Accession Number:

AD1004212

Title:

CFD Simulations of a Ferry in Head Seas

Descriptive Note:

Technical Report

Corporate Author:

Defence Research and Development Canada - Atlantic Dartmouth NS Canada

Personal Author(s):

• Thornhill,Eric

Report Date:

2011-03-01

Pagination or Media Count:

108.0

Abstract:

A ship travelling in a seaway can often experience slamming characterized by large sudden loads from impacts with waves. These loads can be large enough to cause local damage, but also induce a whipping response which stresses the primary hull structure and adversely affects the overall fatigue life of the vessel. Most common sea keeping prediction programs use potential flow theory that cannot directly simulate the physics of slamming. This report contains a study using more advanced computational fluid dynamics methods which can reproduce wave impacts. Simulations were conducted for a ferry hull travelling in head seas and compared to existing experimental data. It was found that slamming loads are well predicted, but there can be difficulties in generating and propagating large steep waves inside the simulation.

Descriptors:

• computational fluid dynamics
• flow
• ocean waves
• simulation
• ferries(water craft)
• hulls(marine)
• impact
• slamming
• ships
• hydrodynamics

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE