filteredLinear scheme - What is exactly removed by filtering? -- CFD Online Discussion Forums

June 23, 2014, 15:53	filteredLinear scheme - What is exactly removed by filtering?	#1
HakikiCanakkaleli Senior Member Canakkale Dardanelspor Join Date: Aug 2012 Posts: 135 Rep Power: 13	Hi, == 1 == Eugene de Villiers stated that 'The filtering removes staggering caused by pressure-velocity decoupling': http://www.cfd-online.com/Forums/ope...tml#post194184 == 2 == In my view, filteredLinear removes spurious oscillations caused by pure central differencing scheme for high cell Reynolds number problems. == 3 == To my knowledge, pressure-velocity decoupling in co-located grids causes 'checker-board' pressure field. This is, however, remedied by Runge-Kutta(ish) interpolation in OpenFOAM. == 4 == If so, could you please tell me whether filteredLinear removes oscillations due to central differencing scheme or pressure-velocity decoupling? Many thanks in advance. Last edited by HakikiCanakkaleli; June 23, 2014 at 16:36. Reason: Simplification of the question to get more attention from the readers.

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