For a passenger vehicle, approximately 25% of the total aerodynamic drag originates from wheels, making aerodynamics wheels significant factor for overall performance vehicle. To understand complex flow field created by rotational condition and geometry these bluff-bodies, numerical simulations are often used. However, computations frequently performed in domains that replicate open road condit...

Determining when a numerical simulation is fully converged is important in getting accurate and reliable results. In this study a new convergence criterion based on extracting the energetic modes of a numerical solution, based on the Proper Orthogonal Decomposition method, is suggested. The POD convergence criterion is tested and applied to flow over a bluff body which has been solved numerical...

This Letter reports the first large eddy simulation of a turbulent flame using lattice-Boltzmann model. To that end, bluff-body stabilized propane–air is carried out, showing an agreement similar to those available in literature. Computational costs are also reported, indicating modeling reactive flows competitive, with around 1000cpuh required simulate one residence time 1.5 m burner.

Wing flapping is one of the most widespread propulsion methods found in nature; however, the current understanding of the aerodynamics in bird wakes is incomplete. The role of the unsteady motion in the flow and its contribution to the aerodynamics is still an open question. In the current study, the wake of a freely flying European starling has been investigated using long-duration high-speed ...

The physical nature of the initial transition to three-dimensionality of #ow past a circular cylinder has been the subject of considerable debate in the literature. Of several proposed mechanisms, the possibility of classi"cation as an elliptical instability is re-examined in this article. Detailed Floquet analysis of the transition shows clear evidence of the growth of an elliptic instability ...