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Exact(4)
We stretch the mesh in the vertical direction to increase the minimum grid spacing and reduce the computational cost.
In this study, the minimum grid spacing was 7 km in horizontal direction and 3 km in the vertical.
The minimum grid spacing requirements to achieve design order accuracy for a structured-grid scheme are determined for several simple examples using truncation error evaluations on a sequence of meshes.
In practice, to ensure a fine resolution in (Omega_{H}), we impose that the spatial resolution at the boundary of (Omega_{H}) is half the resolution at the origin (where there is the minimum grid spacing).
Similar(56)
A minimum knife grid spacing of 25.4 mm appears to be a practical lower limit, considering the high ram force that would be needed for commercial operation.
From these results, the horizontal grid spacing around 2 km can be viewed as the minimum required resolution for a deep convective resolving model over the entire Earth, although the required grid spacing might depend on numerical discretization methods.
The grid spacing was explicitly defined to be smaller than the minimum size of resolved anomalies so that every robust pattern in the resulting model included several nodes.
The simulation model has a spatial grid size of (2000 times 2560 times 500) with a grid spacing of 0.5 km and a time step of 0.025 s with the minimum wavespeed of 1.5 km/s for the shallow-most sedimentary layer.
Furthermore, another calculation for a grid spacing of 0.025 km and Vs of 0.5 km/s at the top layer with 20 grids per minimum wavelength resulted in 7.886 7.891 s (0.001 s) of two-way travel time of S reflection with a fluctuation of 0.005 s.
The minimum grid interval is about 59 km.
The horizontal grid spacing was 5 km and the vertical grid spacing was 0.5 km.
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