solving by finite difference method


by a_hoseni110
Tags: difference, finite, method, solving
a_hoseni110
a_hoseni110 is offline
#1
Dec8-12, 06:08 AM
P: 1
hi;
I have 3 hyperbolic electrodes ,one as a ring and 2 others as endcap
electrodes which have potential v and 0 respectively.(quadrupole ion trap)
I want to solve potential inside the trap by finite difference method.

I don't know how general equations for unshaped materials will change , If I truncate my shape .
I don't know how to determine the magnitude of nodes which are on truncated line or exactly before that?

please help me
thanks a lot
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
mfb
mfb is offline
#2
Dec8-12, 11:56 AM
Mentor
P: 10,813
Where do you truncate your shape?
If the field is not too far away from uniform, you can assume a uniform field (in direction of the border) as boundary condition.


Register to reply

Related Discussions
Solving Diffusion PDE By Finite difference Method in fortran Differential Equations 1
Solving Diffusion Equation By Finite difference Method in fortran Calculus 6
Solving diffusion equation using finite difference method Nuclear Engineering 0
solving a fourth order PDE by finite difference method by matlab Calculus & Beyond Homework 0
Solving Fick's Law by Finite Difference Method Differential Equations 2