Solute Boundary Condition Equations

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mGohar
Posts: 36
Joined: Wed Jul 15, 2015 11:16 pm
Location: USA

Solute Boundary Condition Equations

Post by mGohar » Tue Apr 23, 2019 11:01 pm

Hi,

My quick question is what is 'c_n' in equations 6.35, 6.36, and 6.38 in the technical manual? Is it the nodal concentration in the current time or the one in the previous time step?

Thanks

Jirka
Posts: 4805
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Solute Boundary Condition Equations

Post by Jirka » Wed Apr 24, 2019 12:48 am

That depends on the numerical scheme. For the explicit scheme, it is the concentration at the old time, for the fully implicit scheme at the new time, and for Crank-Nicholson half of both. J.

mGohar
Posts: 36
Joined: Wed Jul 15, 2015 11:16 pm
Location: USA

Re: Solute Boundary Condition Equations

Post by mGohar » Thu Apr 25, 2019 6:44 pm

Thanks for your reply!

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