HPC Adaptive Timestepping: Difference between revisions
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=HPC Quadtree Adaptive Timestepping=
The Quadtree solver uses a single adaptive timestep for the entire model at any instance in time. Different timesteps are not applied to the respective different resolution nest levels. If a small cell resolution is nested down in water that is deeper than the cell face length, the Diffusion control number would be the critical limiter that is setting the timestep and the model will run slower than expected. This can be confirmed by reviewing the <u>[[HPC_Model_Review#HPC_dt_Time_Series_Output_.28.2A.hpc.dt.csv.29 | hpc.dt.csv file]]</u> information.
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