How to calculate unsteady residual -- CFD Online Discussion Forums

October 21, 2012, 04:27	How to calculate unsteady residual	#1
praveen Super Moderator Praveen. C Join Date: Mar 2009 Location: Bangalore Posts: 343 Blog Entries: 6 Rep Power: 18	Hello Is there a function available to calculate something like $\sum_{i=1}^{ncells} \left( \frac{\rho^n_i - \rho^o_i}{\Delta t} \right)^2 V_i$ I am looking for some solution like sum(sqr(fvc::ddt(rho))) but I dont know if such functions exist.

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