Intercomparison of Spatial Interpolation Schemes for Use in Nested Grid Models

摘要: Abstract Two geometrical and two advection-equivalent spatial interpolation schemes were tested in providing lateral boundary conditions to a nested grid domain. Geometric used this study are zeroth- order quadratic scheme, while the based on upwind Bott’s advection schemes. The test problem involves an initially cone-shaped distribution of scalar advected from coarse fine grid. Simulation results compared exact solution magnitude phase characteristics each scheme. Results indicated that scheme provided better interface and, consequently, more accurate transition signal