Which numerical method should I use??

Hermano · December 2, 2011, 12:03

Hi,

I want to solve the 3D Laplace equation in cylindrical coordinates with a fast finite difference technique. Which one should I use if I want to solve it with Matlab (SOR, conjugate gradient, etc)?

I tried this with a simple loop but the calculation time is so big....

Examples in 3D are very welcome!!

Thx

Rami · December 12, 2011, 04:39

Hola Hermano (and please do not reply in Spanish, as I exhausted all my vocabulary in the first word...),
I suggest using the most basic (geometric) multigrid method being the fastest. Using the simplest options for the available multigrid variants (e.g., V-cycle) will suffice.

Best luck,
Rami

December 2, 2011, 12:03	Which numerical method should I use??	#1
Hermano New Member Join Date: Jul 2010 Posts: 10 Rep Power: 15	Hi, I want to solve the 3D Laplace equation in cylindrical coordinates with a fast finite difference technique. Which one should I use if I want to solve it with Matlab (SOR, conjugate gradient, etc)? I tried this with a simple loop but the calculation time is so big.... Examples in 3D are very welcome!! Thx

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December 12, 2011, 04:39		#2
Rami Senior Member Rami Ben-Zvi Join Date: Mar 2009 Posts: 155 Rep Power: 17	Hola Hermano (and please do not reply in Spanish, as I exhausted all my vocabulary in the first word...), I suggest using the most basic (geometric) multigrid method being the fastest. Using the simplest options for the available multigrid variants (e.g., V-cycle) will suffice. Best luck, Rami