Abstract
This chapter presents the outcome of an experiment of three-dimensional numerical simulations of the flow field past a tapered circular cylinder, at low Reynolds number, which was conducted using an implicit multiblock Navier–Stokes solver. Two-dimensional investigations were carried out to ensure the feasibility of these types of simulations with this solver. The detailed results of three-dimensional simulations, which aimed at reproducing the previous laboratory experiments by Piccirillo and Van Atta, are presented. The main features of the computed flow fields seem to agree well with experiments as well as other numerical simulation. The results showed the effect of the mesh and some parameters such as the time step on the accuracy of the solutions. It is concluded that the Concurrent Block Jacobi (CBJ) solver has proved to perform fully satisfactorily both for two and three-dimensional laminar flow computations. The present results compare favorably with other simulations and experimental data, both in two-dimensional and three-dimensional cases. The CBJ code has been proved to perform satisfactorily for simulations of the complex laminar flow behind tapered cylinders and reproduce the dominant flow phenomena observed experimentally.
Published Version
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