A Cartesian grid solver is coupled with an orthogonal curvilinear grid solver using overset grid interpolation and a coupled pressure Poisson solver. It aims at resolving the boundary layer on the body surface effectively. SUGGAR code, an overset grid assembly program, provides overset grid information of a Cartesian background grid and a thin orthogonal body-fitted grid to resolve the boundary layer on the surface. The overset grid information is used to interpolate velocity, pressure, turbulence quantities, and level set function. A coupled pressure Poisson equation is solved using PETSc. The coupled curvilinear/Cartesian grid solver has been applied to two-phase turbulent flows past a circular cylinder and has shown good agreement with the experimental data and the LES results in the literature. The solver is being applied to a free surface flow around Wigley’s parabolic hull form at Re = 3.4×106 and Fr = 0.25. The numerical results are promising compared to an experimental result of wave elevations at the same Fr.
- Fluids Engineering Division
Toward Wall Modeling in Cartesian Grid Solver Using Overset Grid Technique for Ship Hydrodynamics
- Views Icon Views
- Share Icon Share
- Search Site
Hanaoka, A, Yang, J, & Stern, F. "Toward Wall Modeling in Cartesian Grid Solver Using Overset Grid Technique for Ship Hydrodynamics." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1A, Symposia: Advances in Fluids Engineering Education; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Applications in CFD; Bio-Inspired Fluid Mechanics; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES, and Hybrid RANS/LES Methods. Incline Village, Nevada, USA. July 7–11, 2013. V01AT09A003. ASME. https://doi.org/10.1115/FEDSM2013-16481
Download citation file: