EFDC Restart Options are shown in Restart Options240222401. An explanation of the terms used, as well as how to use each option, is provided below.
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The Restart is a previously available feature of EFDC and is applicable when a model has stopped prematurely and not finished. The user can use it to restart from the point at which it terminated or some other point by selecting the appropriate restart file.
As noted that if Use is not checked for Output Options for Restart Files then EFDC will not create restart files. The restart function is still available but the user needs to load their own restart file.
If the user selects the checkbox Use, EFDC will automatically generate the restart file ( RESTART.OUT) which is separated from the previous output.
In order to restart the model, the user can use Set files button to navigate to the folder where the output files are located. The user has to select only the RESTART.OUT file and click open then the other restart files (such as, RSTWD.OUT, etc.) will be automatically selected by EE based on the requirement of EFDC model . These files will normally be in the #output folder, with file name to be selected shown in the header and bottom left of the open file interface. EE will rename the files automatically and save them to the project directory after each one has been selected.
Some of the restart files that are created include the TEMP.RST and RSTWD.INP files if temperature and wetting & drying are being simulated. The Dye Overwrite is a legacy option. If the checkbox is selected the dye concentrations in the restart file will be overwritten by DYE.INP file. This is useful when restarting a tracer study with a new initial condition.
- Continuation Run
A new option is Continuation, whereby when restarting a model, EFDC+ can now move to the correct location in the EE linkage files and begin writing from the time the model stopped or from the time selected for restart in case of using date stamp. The settings for this restart option are shown in Restart Options240222401.
A Continuation Run is the same as the Restart option except that the output will append to an existing run and so is only applicable when there is already model output in the current model directory. If there is no output and a restart file then this option is not enabled. If no date stamp is used EE will display only one restart file without date label which is the last restart file before EFDC terminated. To create the restart file the Restart Output should be set to continuous (i.e. N=1). EE displays the date range available for the continuation from the most recent binary file output in the Last Dates box.
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