HPC Adaptive Timestepping: Difference between revisions

''NOTE: Models that require an excessively small 2D timestep to remain stable are symptomatic of models with input topography or boundary condition errors. Please refer to [Tutorial_Module03 | Tutorial Module 03] for discussion on this topic.''

 

HPC links with the 1D solver, ESTRY. When run with HPC (instead of Classic) ESTRY has been reconfigured to automatically act as an adaptive/varying timestep solution, and can step at different multiples of steps to the HPC 2D solver. The ESTRY 1D <font color="blue"><tt>Timestep </tt></font> command for a HPC 1D/2D linked model is the maximum limiting timestep the 1D solver can use, and the 1D and 2D solutions are synchronised based on the size of the "maximum 1D timestep" and the "target 2D timestep":

* If target 2D timestep = maximum 1D timestep: No adjustment is made.