Help!! I'm trying to solve the electric field (DC) in a straight channel. I guess the final answer is constant gradient distribution.
Now, I don't give any initial value for electric field. After five days, I still can't get the distribution that I want.
So, I think that if I can give the constant gradient distribution for electric field. I can get better result.
But I don't know how to set the constant gradient distribution for electric field!!
Maybe there is something wrong with my treatment with electric field, I can't get the convergence solution.
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