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PDE with NDSolve Mathematica

Posted 9 years ago

NDSolveValue aint working for the following PDe with the problem as follows

Needs["DifferentialEquations`InterpolatingFunctionAnatomy`"];
Needs["NDSolve`FEM`"];
NDSolveValue[{n* M0*/Aa* Cp0* D[T[r,z],z] == 1/r*D[(\[Lambda]*r*D[T[r,z],r]),r] ,  
T[r,0] == 1323, 
-\[Lambda] *(D[T[r,z],r]/.r->R3) == h3 * (1322 - T[R3,z] ) ,  
-\[Lambda] *(D[T[r,z],r]/.r->R2) ==  h2 * (Tw2[z] - T[R2,z] ) }, T, {r,R2,R3},{z,0,L} ]

Syntax::tsntxi: \Needs[DifferentialEquationsInterpolatingFunctionAnatomy];Needs[NDSolveFEM];NDSolveValu e[{n* M0/Aa Cp0* D[T[r,z],z] ?90? - T[R2,z] ) }, T, {r,R2,R3},{z,0,L} ] is incomplete; more input is needed

I attaching the file too. Please help.

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POSTED BY: Amruthesh T

Could it be that you missed specifying values for the various constants such as h2, h3 etc, which will be needed for a numerical solve?

POSTED BY: Isaac Abraham
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