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Solving simultaneous PDEs using FEMLAB

  1. Jun 29, 2007 #1
    1. The problem statement, all variables and given/known data
    I want to solve the following two interlinked (simultaneous) Partial Differential Equations using FEMLAB. The equations are:
    \[\frac{\partial^2 \psi}{\partial^2 x} = - \frac{q}{\epsilon} p \]
    \[p \frac{\partial^2 \psi}{\partial^2 x} + \frac{\partial \psi}{\partial x} . \frac{\partial p}{\partial x} = 0 \]

    q = 1.6e-19
    \[\epsilon = 3*8.854e-12 \]

    2. Relevant equations
    How to Solve using FEMLAB?? or any PDE solver...

    3. The attempt at a solution
  2. jcsd
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