Accelerating CFD via local POD plus Galerkin projection
نویسندگان
چکیده
Various methods involving local proper orthogonal decomposition (POD) and Galerkin projection are presented aiming at accelerating the numerical integration of nonlinear, time dependent, dissipative problems. The approach combines short runs with a given computational fluid dynamics (CFD) solver and low dimensional models constructed by appropriate POD modes, which adapt to the dynamics. Application to the approximation of transients in laminar fluid flows and bifurcation diagrams is discussed in terms of flexibility and efficiency.
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