Hi,

A beginner's question: I have a set of coupled partial differential
equations which I feel that I am close to dealing with in FiPy,
except that they are in phasor form (that is, they have complex-valued
variables).  When I try introducing a source term with complex-typed
coefficient or a variable, initialized with a non-zero imaginary
part, I get this error:

   TypeError: array cannot be safely cast to required type

Is FiPy capable of solving such equations in their complex form?
If not, is the best alternative just splitting each equation into
a pair of coupled equations for the real and imaginary parts of the
complex variable?  I'm guessing that this would be essentially
equivalent to solving any other sets of coupled differential
equations.

(For concreteness, the equations are roughly of this form:

eq1 = TransientTerm(coeff = 1) - VanLeerConvectionTerm(coeff =
(-vg,),diffusionTerm = diffTerm) -  ImplicitSourceTerm(coeff =
-alpha) - ImplicitSourceTerm(coeff=gB*Ip)

except that the (constant) Ip in the last source term will have to
be changed to the product of two other variables.)

Any advice is appreciated.

Thanks!
David

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