CATAMARAN MOTION SIMULATION BASED ON MOVING GRID TECHNIQUE

General purpose software is developed to simulate 6-DoF fluid-structure interaction in two-phase viscous flow. It is a VoF-fractional step solver based on the finite-volume discretization which uses a boundary-fitted body-attached hexahedral grid as the motion simulation strategy. As an application, a high-speed planing catamaran is simulated in steady forward motion as well as in turning maneuver. Results are compared with the available data and good qualitative and quantitative agreements are achieved. Numerical schemes and the solution algorithm of the software are consistent and show a good capability to model highly nonlinear ship motions. It can be further developed to represent a more complete model of vessel hydrodynamics by simulating rudder and propeller systems.

[1]  H. Schlichting.  Boundary Layer Theory , 1955 .

[2]  Roozbeh Panahi,et al.  Development of a numerical hydrodynamic tank for ship motion simulation , 2006 .

[3]  Bertrand Alessandrini,et al.  Simulation of three‐dimensional unsteady viscous free surface flow around a ship model , 1994 .

[4]  Dongjoo Kim,et al.  A Second-Order Time-Accurate Finite Volume Method for Unsteady Incompressible Flow on Hybrid Unstructured Grids , 2000 .

[5]  Rodrigo Azcueta,et al.  Computation of Turbulent Free- Surface Flows Around Ships and Floating Bodies , 2002 .

[6]  Hrvoje Jasak,et al.  Error analysis and estimation for the finite volume method with applications to fluid flows , 1996 .

[7]  F. Stern,et al.  Ship motions using single-phase level set with dynamic overset grids , 2007 .

[8]  Hideaki Miyata,et al.  Difference solution of a viscous flow with free-surface wave about an advancing ship , 1987 .

[9]  Hiroshi Kagemoto,et al.  Ship Motions and Loads in Large Waves , 2000 .

[10]  R. I. Issa,et al.  A Method for Capturing Sharp Fluid Interfaces on Arbitrary Meshes , 1999 .

[11]  Gianluca Iaccarino,et al.  IMMERSED BOUNDARY METHODS , 2005 .

[12]  James F. O'Brien,et al.  Simultaneous coupling of fluids and deformable bodies , 2006, SCA '06.

[13]  Stephan M. Hitzel,et al.  Parallel remeshing of unstructured volume grids for CFD applications , 2007 .

[14]  David L. Marcum,et al.  A sliding interface method for unsteady unstructured flow simulations , 2007 .

[15]  Roozbeh Panahi,et al.  Numerical simulation of three‐dimensional interfacial flows , 2007 .

[16]  Roozbeh Panahi,et al.  COMPARISON OF INTERFACE CAPTURING METHODS IN TWO PHASE FLOW , 2005 .

[17]  Yan Xing-Kaeding,et al.  Unified Approach to Ship Seakeeping and Maneuvering by a RANSE Method , 2006 .

[18]  Roozbeh Panahi,et al.  DEVELOPMENT OF A VOF-FRACTIONAL STEP SOLVER FOR FLOATING BODY MOTION SIMULATION , 2006 .