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partial derivative of external MATLAB function

Posted Feb 5, 2013, 4:02 p.m. EST Interfacing, Parameters, Variables, & Functions, Studies & Solvers Version 4.3a 0 Replies

Nawaz Ahmad
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Hi,

I am modeling reactive transport in COMSOL and have external MATLAB function to solve the chemical reactions. MATLAB function is defined based on five COMSOL variables as follows;

FUNCTION NAME: r_kin
ARGUMENTS: u1,u2,u3,u4,u5

External MATLAB function works properly but I want to define function derivative. May anyone like to guide how to define the partial derivative of the above stated external MATLAB function.

Regards,

Nawaz Ahmad
0 Replies Last Post Feb 5, 2013, 4:02 p.m. EST
COMSOL Moderator

Hello Nawaz Ahmad

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