A sliding grid based method for the roll decay simulation

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Lungu, A.^1

Dunarea de Jos University of Galati, Faculty of Naval Architecture, Department of Naval Architecture, Domneasca Street No. 47, Galati

800008, Romania^1

关键词: Accurate prediction;    Degree of freedom;    Detached eddy simulations;    Global approaches;    Governing equations;    Novel techniques;    Numerical predictions;    Spatial discretizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012052/pdf
DOI  :  10.1088/1757-899X/591/1/012052

学科分类：工业工程学

来源: IOP

【 摘 要 】

The paper describes a novel technique meant to support the numerical prediction of the roll decay for a ship hull equipped with bilge keels in an attempt of establishing a methodology for accurate prediction of the damping forces which occur during the oscillation. The numerical simulation is achieved by making use of the ISIS-CFD solver, part of the FineTM/Marine package available in the NUMECA suite. The solver is based on finite volume method to build the spatial discretization for the governing equation to solve the incompressible unsteady RANSE in a global approach. Closure to the turbulence is achieved by making use of the detached eddy simulation model which has been found as being enough accurate. All the computations are performed in respect to an earth-fixed Cartesian reference frame with only one degree of freedom i.e. roll motion. The validation of the computed solution is done through the comparisons with the experimental data.