Aerodynamics of Three-dimensional Bluff Bodie
نویسندگان
چکیده
منابع مشابه
External Boundary Conditions for Three-Dimensional Problems of Computational Aerodynamics
We consider an unbounded steady-state flow of viscous fluid over a three-dimensional finite body or configuration of bodies. For the purpose of solving this flow numerically, we discretize the governing equations (Navier–Stokes) on a finite-difference grid. Prior to the discretization, we obviously need to truncate the original unbounded domain by introducing an artificial computational boundar...
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Unsteady flow past a circular cylinder at a Reynolds number of 300 has been simulated. The spanwise extent of the computational domain has been systematically varied from zero (2-D) to a large value of 12&, where 4 is the spanwise wavelength of the fundamental mode-B 3-D instability (Williamson, 1996). Simulations with intermediate spanwise extent of 4 and U, have also been performed so as to i...
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Experimental observation of a permanent reflectional symmetry breaking (RSB) is reported for a laminar three-dimensional wake. Based on flow visualizations, a first bifurcation from the trivial steady symmetric state to a steady RSB state is characterized at Re=340. The RSB state becomes unsteady after a second bifurcation at Re=410. It is found that this RSB regime is persistent at large Reyno...
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ژورنال
عنوان ژورنال: Wind Engineers, JAWE
سال: 2000
ISSN: 1883-8413,0912-1935
DOI: 10.5359/jawe.2000.83_11