skade eaction ffusion ne-dimensional System - ZIB

5.4 Grid managent
The program KASKADE supports work with several grids which are connected
to a list. A time integration requires to exchange values on differently
efined grids. This leads to cos eek algorihms. To be more efective here,
he srucure EDG is enlarged he new elent
*twin
If the considered edge exists in he other triangulation, then this elemen
points at he corresponding element, otherwise it is nil. In the structur
TRIANGULATION the new element int twinRelation stands for the e
istence of such a relation between two triangulations.
To work wih tw grids the folowing funcons can be used:
int SetTwinRelOnCoarseGrids(TRIANGULATI *t,RIUL *t)
inializes the twirelaton of two arse grids.
DG *FindBrotherEdge(real ,EDG *edFrom
nds the edge of the other grid n which a given poin ies.
real InterpolateInEdge(real E *edn,int var,int inde
gives back an nterpolated value.
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