Authors: Kang Chen Debo Huang Yunbo Li
Publish Date: 2008/10/11
Volume: 7, Issue: 3, Pages: 174-178
Abstract
As a new type of hull form trimaran has remarkable excellent performances and has drawn more and more attention When the viscous CFD technology now available is applied to the research of resistance performance of trimaran the spatial discretization would usually result in the grid error and uncertainty and thus the considerable discrepancy between the numerical results and the experimental data In order to ascertain how much the grid would affect the calculation the grid convergence should be studied A mathematical trimaran was chosen as an example with the commercial code CFX for the simulation VOF for surface treatment and the grid study was carried out based on two different turbulence models It was concluded that carrying out grid study is helpful in estimating the grid error and uncertainty and indicating the direction of improving the credibility of the numerical calculation and in addition to grid errors and uncertainties the turbulence modeling errors and uncertainties contribute to the simulation errorsCHEN Kang was born in 1979 He is a doctor from Harbin Engineering University He is now working at Shanghai Merchant Ship Design Research Institute His current research interests are prediction of ship resistance performance and ship lines design
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