A sensitivity study of numerical solutions of the South China Sea ocean model to various grids generated by grid generation technique
Tran, Vinh X.
Ly, Le N.
MetadataShow full item record
The sensitivity of numerical solutions of systems of nonlinear flow equations (Navier-Stokes equations) to the grid used is investigated through the use of the South China Sea (SCS) numerical ocean model. Traditionally, rectangular coordinate grids are used in environmental modeling. The advantage of rectangular coordinate grids is their simplicity in the generation process. However, rectangular coordinate grids are not well suited for regions with complex terrain (coastlines and topography) and occasionally lead to poor accuracy in numerical solutions. The grid generation techniques are being introduced to coastal ocean modeling to study the sensitivity of numerical solutions to the grid used and to investigate the enhancement of the modeling process. Grid generation techniques are broadly used in aeronautical engineering community for solving CFD problems. One orthogonal (l2lxl9l) and two curvilinear nearly-orthogonal grids (l2lxl9l and lSlx24l) are designed to couple with the SCS numerical ocean model. The grids are designed using the EAGLEView grid generation code developed by the National Science Foundation (NSF) Engineering Research Center (ERC) of Mississippi State University. EAGLEView implements a grid generation technique using mainly elliptic and algebraic generation systems. The designed grids are processed with the SOS numerical ocean model for 200 days to study the sensitivity of numerical solutions to the grid used. The solutions of the temperature and salinity fields are presented and analyzed. The advantages of curvilinear nearly- orthogonal grids are also discussed. (MM)
Showing items related by title, author, creator and subject.
A Review of Element-Based Galerkin Methods for Numerical Weather Prediction, Finite Elements, Spectral Elements, and Discontinuous Galerkin Marras, Simone; Kelly, James F.; Moragues, Margarida; Müller, Andreas; Kopera, Michal A.; Vázquez, Mariano; Giraldo, Francis X.; Houzeaux, Guillaume; Jorba, Oriol (2014);Numerical Weather Prediction (NWP) is in a period of transition. As resolutions increase, global models are moving towards fully nonhydrostatic dynamical cores, with the local and global models using the same governing ...
Ekaterinaris, J.A.; Schiff, Lewis B. (1990-01);Navier-Stokes solutions of subsonic vortical flow over a 75 deg sweep delta wing with a sharp leading edge are presented. The sensitivity of the solution to the numerical scheme is examined using both a partially upwind ...
Probability modeling of multi-type autonomous unmanned combat aerial vehicles engaging non-homogeneous targets under imperfect information Papadopoulos, Themistoklis (Monterey, California. Naval Postgraduate School, 2007-03);UCAVs are advanced weapon systems that can loiter autonomously in a pack over a target area, detect and acquire the targets, and then attack them. Modeling these capabilities in a specific hostile operational setting is ...