Setting boundary conditions to faces, really simple question -- CFD Online Discussion Forums

March 9, 2012, 08:25	Setting boundary conditions to faces, really simple question	#1
lrunber New Member lazio Join Date: Apr 2010 Posts: 22 Rep Power: 16	Hi, I am just wondering a very basic principle. If the linear system of equations is set up for each cell in the domain from the well known equation (where p is the cell center and n the neighbouring cell centres): $a_p \phi_p + \sum a_n \phi_n = r$ Where are the boundary condition imposed, considering BC's are to be set at the appropriate faces and the values for $\phi$ are at the cell centers?

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