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Burcu
06/17/13 10:01am

Hello,

I am trying to model mass transfer in a circular object. I only have one mass balance and 3 boundary and initial conditions.

Program gives an error of "infinite expression encountered" and I couldn't find where the problem is.

Mass balance is:

ep*Deff*(2)*D[cp[r, t], r] + r*ep*Deff*D[cp[r, t], r, r] == r*ep*D[cp[r, t], t] + r*qp*AA*D[cp[r, t], t]

Boundary and initial conditions:

cp[r, 0] == 0,
Derivative[1, 0][cp][0, t] == 0,
-Deff*Derivative[1, 0][cp][rp, t] == kg*(3*ec/rp)* 0.0024 - cp[rp, t])

Thank you for your help!

Burcu

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Subject (listing for 'Problem of Infinite expression encountered')
Author Date Posted
Problem of Infinite expression encountered Burcu 06/17/13 10:01am
Re: Problem of Infinite expression encountered Bill Simpson 06/17/13 6:28pm
Re: Re: Problem of Infinite expression encounte... Burcu 06/19/13 3:44pm
Re: Re: Re: Problem of Infinite expression enco... Bill Simpson 06/19/13 9:40pm
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