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FlexPDE supports the ability to explicitly state the values of some variables in specified REGIONS.  This feature is controlled by declaring variables to be EXPLICIT and supplying the expected value or expression. In solving the EQUATIONS for these variables, the value of expression will be used.

VARIABLES

   var1, var2 {,...}

BOUNDARIES

REGION 1

  EXPLICIT(var1)=expression

 

Values of a variable may also be made EXPLICIT along a bounding path :

VARIABLES

   var1, var2 {,...}

BOUNDARIES

REGION 1

  START(...)

  EXPLICIT(var1)=expression

 

This is most useful in moving mesh models as applied to the surrogate coordinate variables.

Examples:

Samples | Usage | Moving_Mesh | Sliptube_Explicit_Reconnect.pde