Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations Toost on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Problem with the Finite Element Method applied to Electrostatics

Status
Not open for further replies.

AlanAlves

Civil/Environmental
Jan 8, 2019
1
Hi!
I have a code that solve the poisson equation for FEM in temperature problems.
I tested the code for temperature problems and it works!

Now i have to solve an Electrostatic problem.
There is the mesh of my problem:

01_gh2jma.png


At the left side of the mesh we have V=0 (potencial).
There is a line charge located in (0.5,0) with charge density λ=1/(4*pi).

The poisson equation for electrostatics is:

7ebcf984-7712-4702-803b-256b121ea07f_phtrko.jpg


My dificulty is how to solve it for a line charge (what is the best equation for ρ). I used the Dirac delta, and some aproximations for delta function but my code has wrong results.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor