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Showing 1 to 11 of 11 for “"Square cylinder"”.
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Stochastic modeling of flows behind a square cylinder with uncertain Reynolds numbers
… number on stochastic fluid flows behind a square cylinder and evaluate computational schemes to do so. We review existing literature, examine our simulation results and validate the numerical solution. The thesis uses a novel open boundary condition formulation for DO stochastic …
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Study of Three-Dimensional Vortex Shedding in the Wake of a Square Cylinder
… that three-dimensional transition process for square cylinder is similar to that of a circular cylinder. Most notably there is a long wave-length three-dimensional disturbance which becomes unstable at a Reynolds number about 170, followed by the appearance of a short wavelength instability. …
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Numerical Simulation of Flows past a Circular and a Square Cylinder at High Reynolds Number, and a Curved Plate in Transitional Flow
… simulation of flow past a circular and a square cylinder at high Reynolds number. Wray-Agarwal (WA) turbulence model is a recently developed one-equation turbulence model derived from k-w closure. Comparisons are made among computational results from WA model, Spalart-Allmaras (SA) model, …
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Three dimensional topology and structural differences in the turbulent wake of cantilevered square and circular cylinders protruding thin boundary layers
… of the flow around cantilevered circular and square-section cylinders to investigate the effects of the cylinder geometry and the boundary layer state on the wake structures and flow topology. Detailed velocimetry results are presented in the wake of circular and square cylinders protruding a …
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Evaluation of the uniform theory of diffraction for edge diffraction at low frequency
… are developed for scattering by a strip and a square cylinder with diffraction considered as a local phenomenon. Single and multiple diffractions are considered, and both TE and TM polarizations are done. As a benchmark, moment method solutions are developed for the strip and square cylinder. …
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Numerical studies of unsteady flow past bluff bodies
… In addition, flows past two dimensional square cylinder with three different front corner fillet sizes have been numerically studied by solving the full Navier-Stokes equations at high Reynolds number of 14,000. Specific attention has been given to flow evolution at early stages in terms …
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Large eddy simulations of bluff-body wakes on parallel computers
… considered concerns turbulent flow over a square cylinder placed normal to a uniform free stream. The Reynolds number selected for the simulations is 21,400 where detailed experimental data are available. The computation times required for such simulations are quite large because of the …
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The Development and Applications of a Numerical Method for Compressible Vorticity Confinement in Vortex-Dominant Flows
… interactions, the turbulent flow around a square cylinder and the turbulent flow past a surface-mounted 3D cube in a channel floor. A second approach for evaluating the effectiveness of the CVC method is by solving simplified "model problems" and comparing with exact solutions. Problems …
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A dimensionally split Cartesian cut cell method for Computational Fluid Dynamics
… to compute results for the turbulent flow over a square cylinder, and for flow over the SAE Notchback and DrivAer reference automotive geometries. We intend to publish the promising results as part of a future publication, which would be the first assessment of a WMLES Cartesian cut cell approach …
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Computational modelling of vortex shedding flows
… CFD method for vortex shedding flows past square and circular cylinders. The overall approach can be regarded as a compromise between the accuracy and computational costs, especially for high-Reynolds number flows. The latter are modelled by variants of the k - E eddy-viscosity model which …
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Measurement of simultaneous fluctuating loads at multiple levels on a model of a tall building in a simulated urban boundary layer
… at several elevations throughout the height of a square cylinder having an aspect ratio of 8.33. Analog circuits using operational amplifiers were used to amplify and sum signals from numerous pressure transducers. The resultant signals directly represented resultant loads at the level where the …