Journal ArticleDOI
Three-dimensional particle-tracking velocimetry measurement of turbulence statistics and energy budget in a backward-facing step flow
Nobuhide Kasagi,Akio Matsunaga +1 more
TLDR
In this paper, detailed turbulent flow measurements were made in a plane channel with a one-sided 50% abrupt expansion, which acted as a backward-facing step, and various turbulent statistics and the energy budget were calculated from numerous instantaneous vector distributions.About:
This article is published in International Journal of Heat and Fluid Flow.The article was published on 1995-12-01. It has received 170 citations till now. The article focuses on the topics: Turbulent diffusion & Flow separation.read more
Citations
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Journal Article
Direct numerical simulation of turbulent flow over a backward-facing step
TL;DR: In this article, a 3D, turbulent flow in a channel with a sudden expansion was studied by direct numerical simulation of the incompressible Navier-Stokes manifold, which was performed using spectral/hp element method with stiffly-stable velocity correction scheme for time integration.
Journal ArticleDOI
A review of Backward-Facing Step (BFS) flow mechanisms, heat transfer and control
TL;DR: It is shown that the step size (duct expansion ratio) will define the basic re-circulation and re-attachment process, while the coupled effects of inflow parameters and the perturbation designs also help shape the flow behaviors after BFS.
Journal ArticleDOI
A Mixed-Time-Scale SGS Model With Fixed Model-Parameters for Practical LES
TL;DR: In this paper, a new subgrid-scale (SGS) model for practical large eddy simulation (LES) is proposed, which is constructed with the concept of mixed (or hybrid) time scale, which makes it possible to use consistent model parameters and to dispense with the distance from the wall.
Journal ArticleDOI
Self-sustained oscillations and vortex shedding in backward-facing step flows: Simulation and linear instability analysis
TL;DR: In this paper, a linear instability analysis was performed to investigate the origin of self-sustained oscillations, at St=O(0.1), which have been widely reported in backward-facing step flows.
Journal ArticleDOI
Large-eddy simulation of heat transfer downstream of a backward-facing step
TL;DR: In this article, a large-eddy simulation is used to predict heat transfer in the separated and reattached flow regions downstream of a backward-facing step at a Reynolds number of 28 000 with a channel expansion ratio of 1.25.
References
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Journal ArticleDOI
Turbulence statistics in fully developed channel flow at low reynolds number
TL;DR: In this article, a direct numerical simulation of a turbulent channel flow is performed, where the unsteady Navier-Stokes equations are solved numerically at a Reynolds number of 3300, based on the mean centerline velocity and channel half-width, with about 4 million grid points.
Journal ArticleDOI
Direct numerical simulation of turbulent flow over a backward-facing step
Hung Le,Parviz Moin,John Kim +2 more
TL;DR: In this paper, a simulation of the Navier-Stokes equations of a backward-facing step flow was performed at a Reynolds number of 5100 based on the step height h and inlet free-stream velocity.
Journal ArticleDOI
A Review of Research on Subsonic Turbulent Flow Reattachment
John K. Eaton,James P. Johnston +1 more
TL;DR: A review of the available data for turbulent flows over backward-facing steps, including some new data of our own and other previously unpublished data, is presented in this paper, where the authors suggest several areas of research that could lead to improvements in our ability to predict flows with separation bubbles.
Journal ArticleDOI
Reynolds Number Dependence of Skin Friction and Other Bulk Flow Variables in Two-Dimensional Rectangular Duct Flow
Journal ArticleDOI
Features of a reattaching turbulent shear layer in divergent channel flow
David M. Driver,H. L. Seegmiller +1 more
TL;DR: In this article, experimental data have been obtained in an incompressible turbulent flow over a rearward-facing step in a diverging channel flow and mean velocities, Reynolds stresses, and triple products that were measured by a laser Doppler velocimeter are presented for two cases of tunnel wall divergence.
Related Papers (5)
Direct numerical simulation of turbulent flow over a backward-facing step
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Combined Heat Transfer and Fluid Dynamic Measurements Downstream of a Backward-Facing Step
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