COMSOL Multiphysics™

elmapextr
Purpose
elmapextr
Define extrusion map operators.
Syntax
el.elem = 'elmapextr'
el.g{ig} = geomnum
el.opname{iop} = opname
el.flagname{iop} = flagname
el.extttol = tol
el.usenan = 'true' | 'false'
el.map{imap} = linmap | genmap | unitmap
el.srcmap{iop} = imap
el.dstmap{iop} = imap
el.geomdim{ig}{edim}.ind{eldomgrp} = domainlist
el.geomdim{ig}{edim}.src{iop} = eldomgrplist
linmap.type = 'linear'
linmap.sg = srcig
linmap.sv{ivtx} = srcvtx
linmap.sframe = srcframe
linmap.dg = dstig
linmap.dv{ivtx} = dstvtx
linmap.dframe = dstframe
genmap.type = 'local'
genmap.expr{idim} = transexpr
genmap.frame = frame
unitmap.type = 'unit'
unitmap.frame = frame
Description
The elmapextr element defines extrusion map operators which can be used at any
location where the source and destination transformations make sense. Each map
operator will take its values from the source domain groups listed in the
corresponding el.geomdim{ig}{edim}.src{iop} field.
For each operator, transformations are specified in the srcmap and dstmap fields in
the form of indices into the map field which consists of a list of transformation
specifications. The available transformation types are 'linear', 'local', and
'unit'. They are described in detail under elcplextr on page 58.
For each operator name, a global variable flagname{iop} is also defined which
evaluates to 1 for all destination points where the map operation can find a
corresponding source point, otherwise it evaluates to 0. If the flagname field is not
given, the flag variables will be given the same name as the corresponding operator.
Therefore, statements like if(my_map,my_map(u),0) make perfect sense.
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