On 07/18/2017 07:21 AM, 'Maxi Miller' via deal.II User Group wrote:
I have an equation system where the right hand side contains a time
derivative, looking like
<https://lh3.googleusercontent.com/-zRtosh4pbeY/WW4KxK2_2qI/AAAAAAAACPQ/Ln8NbS9GxMQ5JUYTQIbuj7g19BvGh9mnwCLcBGAs/s1600/time_derivative.png>
Without that time derivative I can solve it, but I do not know how to include
it here. Are there possible guidelines for that? One idea I got is from here
<https://scicomp.stackexchange.com/questions/27363/approach-for-coupled-equations-with-included-time-derivative>,
but this can not applied to the code in my case (used example 52 as starting
point), as I assume.
Why can't this approach be used here as well? You can still use the first
equation to substitute the time derivative in the second equation.
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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