Abstract
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.
Original language | English |
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Title of host publication | EACWE 2005 - 4th European and African Conference on Wind Engineering |
Pages | 88-89 |
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
Conference | 4th European and African Conference on Wind Engineering, EACWE 2005 |
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Country/Territory | Czech Republic |
City | Prague |
Period | 11/07/05 → 15/07/05 |