 | The physical domain (planet Earth) is a Cubed-Sphere,
which is obtained by the equiangular central projection (or
gnomonic) of an inscribed cube. This results in a non-orthogonal
cuvilinear coordinate system on the surface of the sphere. However, the
computational domain is a Cube with sides ranging from -pi/4 to +pi/4, and has a unifrom grid resolution. The HOMME framewrok is designed on such a grid system. |
 | A New Benchmark Deformational Test The moving vortices on the sphere are created with a combination of solid-body rotational and deformational flow fields on the surface of the sphere. The dual vortices will be generated at dimetrically opposite positions on the sphere. The flow is time dependent, non-divergent, and the anlytic solution is known at any given time. The flow orientation can be controlled by a parameter which directs the flow in any direction along a great-circle. This test can be used for any type of spherical grids. More details of this test can be found in Nair & Jablonowski (2008). |
