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[Ramiz8989]

I need to solve two dimensional Partial Differential Equations:

Where z is axial and r is radial.

Ac, ɛ, Der, ρB, Rj, ΔHrxn and ri are known. I need t calculate Fj, Cj and T.

Relationship between Fj and Cj is:

Cj = Cj0 * (Fj / Ft) * (T0 / T) * (P / P0)

Where Cj0, T0, P and P0 are known.

Ft=summ of Fj

Which tool i need to use, how to start solving?

Thank in advance.