This paper discusses the computation of unsteady two-dimensional incompressible viscous uniform fluctuating flow around bluff bodies. The study focuses on the case where the upstream uniform flow around a circular cylinder is fluctuating in time, harmonically. An implicit second order fully coupled resolution method is developed using a finite volume technique for cell-centered collocated grids. This approach is an alternative to classical segregated approaches, like SIMPLE or PISO. Whereas the segregated methods lead to a sequential resolution of discrete equations and under-relaxation procedures, only one linear system in velocity-pressure is solved using the fully coupled method. The non-linear effects are thus handled better, and the non-linear residues convergence is considerably accelerated. Efficiency and robustness of this numerical technique allows to simulate with accuracy unsteady flows such as uniform fluctuating flow around circular cylinder.
|Title of host publication||EACWE 2005 - 4th European and African Conference on Wind Engineering|
|Number of pages||2|
|Publication status||Published - 1 Dec 2005|
|Event||4th European and African Conference on Wind Engineering, EACWE 2005 - Prague, Czech Republic|
Duration: 11 Jul 2005 → 15 Jul 2005
|Conference||4th European and African Conference on Wind Engineering, EACWE 2005|
|Period||11/07/05 → 15/07/05|