Guess File

GUESS file = <file_name>

Description / Usage

This required card identifies the input file that provides the initial guess for the solution vector for continuation or time integration, where

<file_name>

Specifies the exact name of the file and can be any file name.

The file <file_name> is read by Goma only if the value of the Initial Guess (next section on General Specifications) card is set to read. The current format of this ASCII file is a list of unformatted floating point numbers (the solution variable followed by the residual value for that degree of freedom) in the order of the unknown map; this is the same format as the file described in the SOLN file card. A solution file from a previous simulation may be used.

Examples

Following is a sample card:

GUESS file = contin.dat

Technical Discussion

This file is typically a copy of the SOLN file thus being an exact replica of it. It represents the only way to continue a previous solution from an ASCII file. Typically a continuation proceeds from a converged solution but the result from an intermediate solution could also be used; the user is cautioned about the potential difficulties of restarting from non-converged solution. (See Initial Guess card about (re-)starting from a binary file.)