SMS:CMS-Flow Hot Start: Difference between revisions

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[[Category:CMS-Flow|H]]
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Revision as of 21:55, 5 October 2015

In the CMS-Flow Model Control, the user can specify a previously saved hot start file to be used as initial conditions or instruct CMS-Flow to save hot start files for future use.

To create a hot start file, either select Write Hot Start output file and select an output time, or select Automatic recurring Hot Start file and choose an output interval.

  • Choosing to write the hot start file at a specific output time will create the following file:
  • hot_start.h5 This file has the simulation data including elevations and velocities.
  • Choosing automatic recurring hot start files will create the following files:
  • HOTSTART.INFO This file records what time the hot start file was written and which hot start file is the most recent.
  • HOTSTARTx.H5 (where "x" is a counter) These files have the simulation data including elevations and velocities.

Once the hot start files are created, they can be read into CMS-Flow. Open the CMS-Flow Model Control and check the "initial conditions file" check box, then select the hot start file to be used.

When using a hot start file, the following parameters should be changed as follows:

  • Start Date: no change
  • Start Time: no change
  • Simulation Duration: decrease by the duration of the hot start file
  • Boundary Conditions: no change

Note: For a simulation using a hot start file, the first time step of the solution will be the start time plus the value of one time step plus the duration of the hot start file.

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