Adding explict source terms in Runge-Kutta method -- CFD Online Discussion Forums

March 21, 2018, 12:49	Adding explict source terms in Runge-Kutta method	#1
syavash Senior Member Syavash Asgari Join Date: Apr 2010 Posts: 473 Rep Power: 18	Dear All, How should I add an explicit source term to momentum equation in the incompressible explicit 4th-order runge-kutta method? I have already implemented the method but I can't be sure about the details of adding a source term. At the moment, I have added the explicit source term at the end of the 4th step by adding the source to the velocity quantity, right before solving the Poisson equation for pressure. However, I wonder if it is the correct place. Please help me to find the answer, possibly by introducing an appropriate reference addressing the issue. Kind Regards, Syavash

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