Pressure poisson equations linear system understanding -- CFD Online Discussion Forums

March 5, 2017, 16:30	Pressure poisson equations linear system understanding	#1
AnasVFX New Member Join Date: Mar 2017 Posts: 16 Rep Power: 9	Hey, i am still a beginner and i understood the pressure poisson equation and how to derive it but i don't understand how we will put this in a matrix linear system and why is it sparse? I can't imagine what is in the matrix so please if anyone can make a basic figure of some rows and columns to clarify things for me Is each row the equation for each fluid cell if we r talking about mac grid solving? Thanks

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