Numerical Simulation of Flow over Fully Appended ONR Body-1 with Overset Grid Scheme
Abstract
In order to simplify the construction of the computational grid about complex geometries and to enable the numerical simulation of relative motion between components, an overset grid assembler SUGGAR has been integrated with an existing RANS flow solver UNCLE. This modified flow solver with overset capability allows different flow regions to have their own separate grid that is adaptive to the particular feature of that region. The complete flow field is then made up of a group of overlapping sub-grids. A grid assembler is then used to provide the flow solver with the connectivity information among the sub-grids and the interpolation stencils of the boundary nodal points. To demonstrate the flexibility, feasibility and accuracy of the overset grid scheme, numerical simulations of flow over ONR-Body 1 were performed. ONR-Body-1 is a fully appended submarine model. It was built with the intention to study the complicated flow field about a submarine during maneuvering. It was tested in the tow tank at NSWCCD. Three-dimensional velocity components around the body were measured with the SPIV technique, the force and moment coefficients were obtained through block gages. Comparisons of simulation and experiment and discussion are presented in the report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2007
- Accession Number
- ADP023885
Entities
People
- Cheng-i. Yang
- Lawrence P. Mulvihill
Organizations
- Naval Surface Warfare Center Carderock Division