The open source CFD toolbox
Time schemes

Time schemes define how a property is integrated as a function of time, i.e.

$\ddt{\phi}$

Depending on the choice of scheme, field values at previous time steps are required, represented in the following as $$\old{\phi}$$ and $$\oldold{\phi}$$ for the old and old-old time levels.

# Usage

Time scheme properties are input in the fvSchemes file under the ddtSchemes sub-dictionary using the syntax:

ddtSchemes
{
default none;
ddt(Q) <time scheme>;
}

# Options

Available time schemes include

# Example

See this example to see the relative performance of the schemes.

# Further information

Source code:

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