How Can the Laplace Transform Help Solve Time and Space PDEs?

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travroth
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Hello,

My question of how to solve two PDEs in time and space is the following:
1) partial Wliq / partial t + partial Wliq / partialZ = C1 * C2 (Wice-C3*Wliq)

With initial Conditions: Wliq(0,Zo)=A; W= C4*Wliq(t,Z)+C5*Wice(t,Z)+C6*A

2) partial Wice / partial t =C1*(1-C2)*(C3*Wliq-Wice)

Wice(0,Z)=A; Wice= Wice(t,Z)

I am trying to use the Laplace transform so I can restrain the solution to space only. I haven't been able to get past the transform due to the complexity and it makes me think that this method may not be the most practical.

Any suggestions would be most helpful. Thanks

Travis
 
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I've realized my problem. Thanks looking.

Travis
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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