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Question: Error with PDEtools unexpected occurrence of the variables

Question:Error with PDEtools unexpected occurrence of the variables

jamunoz 35 Maple
pde pdsolve pdetools boundary-conditions
February 01 2018
0

Hi everybody,

I am trying to solve a partial differential equation for wich the boundary condition is evaluated at a point which depends on the other variables. When I try the command

pdsolve({diff(u(x, z, t), z)+C = 0, u(x, h(x, t), t) = 0}, u(x, z, t))

I get Error, (in PDEtools:-Library:-NormalizeBoundaryConditions) unexpected occurrence of the variables {t, x} in the 2nd operand of u(x, h(x, t), t) in the given initial conditions.

In my code I can not rename my variables and I need to evaluate z at h(x, t) and obtain a solution as a function of h(x,t). Is the any way to do it? Any solutions?

Thanks a lot for your help,

Javier
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