Question about FEM

lnk · August 28, 2012, 14:46

Hi everyone,

May I ask why if I use 1D Laplace equation as weighting function on equidistant grid, it will be same as FDM with the centered-difference scheme?

Best,
lnk

FMDenaro · August 28, 2012, 14:57

Quote:

Originally Posted by lnk

Hi everyone,

May I ask why if I use 1D Laplace equation as weighting function on equidistant grid, it will be same as FDM with the centered differential scheme?

Best,
lnk

because second order FD on equidistant grid can be seen as particular form of FEM ...

August 28, 2012, 14:46	Question about FEM	#1
lnk Senior Member lnk Join Date: Feb 2011 Location: Switzerland Posts: 118 Rep Power: 15	Hi everyone, May I ask why if I use 1D Laplace equation as weighting function on equidistant grid, it will be same as FDM with the centered-difference scheme? Best, lnk Last edited by lnk; August 28, 2012 at 16:29.

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