A Block- implicit method for numerical simulation of swirling flows in a model combustor

Resumo

Numerical results for swirling flowe obtained by a point-wise locally-implicit scheme are here reported. Computations are presented for incompressible laminar flow inside a model combustor. Governing equations are written in terms of the so-called primitive variables and are recast into a general form. Finite-differencing is obtained by means of the widely-used control-volume approach. Discretized cross-flow equations are applied to each cell face and then, together with the mass-continuity and the tangential momentum equations, are simultaneously solved by means of a direct method in each computational node. Residue histories for governing equations are presented. Advantages in using a coupled procedure when compared with standard segregated schemes are discussed. © 2003 Elsevier Science Ltd.