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Oct 26, 2018
09:28 AM

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Oct 26, 2018
09:28 AM

PDE Problem

Hey guys,

Now i'm trying to model the concentration in respect of time and space and that's why i'm using PDE solver. However why it does not work and it gave en error that "it found singularity while evaluating the expression.

Help please :(((

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7 REPLIES 7

Oct 26, 2018
11:36 AM

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Oct 26, 2018
11:36 AM

Hi SavitriN,

it is better to simplify everything......The following solution isn't tested:

Oct 27, 2018
06:33 AM

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Oct 27, 2018
06:33 AM

Hi SavitriN,

the following is a revised and corrected solution.

Oct 29, 2018
04:28 AM

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Oct 29, 2018
04:28 AM

Thank you very much!

I will try that 🙂

Oct 30, 2018
04:44 AM

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Oct 30, 2018
04:44 AM

The difference between the file 1 and file 2 that you sent is in the argument you put in the PDE solver. But is that affecting the result?

Because i'm trying your second file and it seems like it does not work again 😞

Oct 30, 2018
05:48 AM

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Oct 30, 2018
05:48 AM

Hi SavitriN,

sorry, in the solve block the derivatives must be written in the compact form:

Oct 27, 2018
11:37 AM

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Oct 29, 2018
04:28 AM

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Oct 29, 2018
04:28 AM

Thank you for the response.

Yes i will try this solution as well.

Cheers