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FanCG1-Visitor
1-Visitor
October 12, 2014
Solved

How to solve this PDE ?

  • October 12, 2014
  • 3 replies
  • 1925 views

Does the information given by the system mean that mathcad cannot handle this kind of parabolic equation?

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Best answer by AlanStevens

Pdesolve will only handle two-dimensional pde's: x,t, or x,y say, not x,y,t.

Alan

3 replies

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AlanStevens19-TanzaniteAnswer
19-Tanzanite
October 12, 2014

Pdesolve will only handle two-dimensional pde's: x,t, or x,y say, not x,y,t.

Alan

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FanCG1-VisitorAuthor
1-Visitor
October 12, 2014

so， can i use the function "multigrid ()" or sth else instead of PDEsolve?

A
AlanStevens19-Tanzanite
19-Tanzanite
October 13, 2014

Fan CG wrote:


...can i use the function "multigrid ()" ?

Only in steady-state.

or sth else instead of PDEsolve?

For time-dependent, spatially 2-D problems you would need to discretize space explicitly and then use an ode solver, like Rkadapt, for the time dependent part. Even this is a drag in MC because the 2-D spatial components need to be contained in a 1-D vector.

Alan

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