Ivar KJELBERG
COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted:
1 decade ago
5 déc. 2012, 01:18 UTC−5
Hi
if you define an integration over a domain, and use the Bolean operand "(My_Var < My_value)" I would expect to get the total volume of the region obeying the Bolean condition, no ?
In COMSOL a 3D integration is by default: integrate_over_my_selections_of_Domains(argument*dx*dy*dz)
while the dx*dy*dz is "implicit" (or it might be 2*pi*r*rd*dz in 2D axi)
--
Good luck
Ivar
Hi
if you define an integration over a domain, and use the Bolean operand "(My_Var < My_value)" I would expect to get the total volume of the region obeying the Bolean condition, no ?
In COMSOL a 3D integration is by default: integrate_over_my_selections_of_Domains(argument*dx*dy*dz)
while the dx*dy*dz is "implicit" (or it might be 2*pi*r*rd*dz in 2D axi)
--
Good luck
Ivar
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
7 déc. 2012, 01:25 UTC−5
HI Ivar
Thanks I hadn't thought of using a boolean expression.
Works perfectly of course
Thanks again
Dan
HI Ivar
Thanks I hadn't thought of using a boolean expression.
Works perfectly of course
Thanks again
Dan
Ivar KJELBERG
COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
7 déc. 2012, 02:58 UTC−5
Hi
one warning, do not use Boolean on average operators, as the normalisation is not taking into account the boolean expression and you get too low values. Then its worth to write out the two integration fully, both with the same boolean expression in the numerator and de-numerator of the average expression
--
Good luck
Ivar
Hi
one warning, do not use Boolean on average operators, as the normalisation is not taking into account the boolean expression and you get too low values. Then its worth to write out the two integration fully, both with the same boolean expression in the numerator and de-numerator of the average expression
--
Good luck
Ivar