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Discontinuity in the potential graph.

Posted Feb 21, 2017, 10:16 a.m. EST Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization Version 5.1 0 Replies

Thanasis Hous
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Hello, I am working on a model with two PDE, namely drift-diffusion equation and Poisson equation, 1D modeling. I have a sandwich of three areas and I apply some boundary conditions. In the interfaces I apply a ΦL = 0.75 V and a ΦR = 0.97 V. In addition, I apply 2 Volt in the edges (the other ground).

I expect a potential profile with discontinuity in the nodes where I applied the Dirichlet BC. However, I do not take the desire graph. I attach the image with the results.

For the first node I used a step function. However it does not work for the other node. Do you have any idea what can I try to change in order to get the right graph.

Thank you very much.

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0 Replies Last Post Feb 21, 2017, 10:16 a.m. EST
COMSOL Moderator

Hello Thanasis Hous

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