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Old   August 22, 2010, 08:03
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I'm modelling a wave energy converter in a 2D wave tank and am using a boundary integral equation method and have split the boundary into panels to apply it.

My problem is in trying to determine d(phi)/dx and d(phi)/dz when I only know the values of the potential at the boundary edge.

I've looked at using the motion of the nodes/particles ie dx/dt and dz/dt:

e.g. d(phi)dx = d(phi)/dz X dz/dt X dt/dx

but I just find myself going in circles and the program not working.

I'm new to using the boundary integral method so there's hopefully a simple solution to this and I would be very grateful if anyone could point it out.

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boundary element method, free surface, wave tank

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