On the Vortex Dynamic of Shear-Driven Deep Cavity Flows with Asymmetrical Walls

On the vortex dynamics of shear-driven deep cavity flows with asymmetrical walls

Canadian Journal of Physics ◽

10.1139/cjp-2016-0305 ◽

2016 ◽

Vol 94 (12) ◽

pp. 1344-1352 ◽

Cited By ~ 2

Author(s):

D. Cornu ◽

L. Keirsbulck ◽

F. Kerhervé ◽

F. Aloui ◽

M. Lippert

Keyword(s):

Physical Nature ◽

Wall Pressure ◽

Vortical Flow ◽

Flow Structures ◽

Cavity Flows ◽

Convective Structures ◽

Deep Cavity ◽

Image Velocimetry ◽

Flow Features ◽

Deep Cavities

The influence of the length-to-depth aspect ratio and of wall asymmetry on the main vortical flow structures evolving in rectangular two-dimensional deep cavities is studied experimentally using wall-pressure and particle image velocimetry (PIV) measurements. Wall-pressure and cavity flow statistics have been analyzed and shown that the flow features are strongly affected especially by the asymmetry. An emphasis is given concerning the behavior of the shear layer oscillations that are compared to the analytical deep-cavity model prediction proposed by P.J.W. Block (NASA Tech. Note. 1976). The results show good agreement with Block’s model if the value of the convection velocity is properly adjusted. Stochastic estimation of the cavity flows demonstrates that convective structures are involved downstream of the cavity along the wall and highlights the physical nature of the pressure-producing flow structures.

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Filter-matrix lattice Boltzmann simulation of lid-driven deep-cavity flows, Part I — Steady flows

Computers & Mathematics with Applications ◽

10.1016/j.camwa.2013.02.020 ◽

2013 ◽

Vol 65 (12) ◽

pp. 1863-1882 ◽

Cited By ~ 5

Author(s):

Congshan Zhuo ◽

Chengwen Zhong ◽

Jun Cao

Keyword(s):

Lattice Boltzmann ◽

Cavity Flows ◽

Steady Flows ◽

Deep Cavity ◽

Lattice Boltzmann Simulation ◽

Matrix Lattice

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Development of Acoustic Resonance Model for Incompressible Fluid Analysis of Deep Cavity Flows

The Proceedings of The Computational Mechanics Conference ◽

10.1299/jsmecmd.2014.27.850 ◽

2014 ◽

Vol 2014.27 (0) ◽

pp. 850-851

Author(s):

Hiroko ISAWA ◽

Yu NISHIO ◽

Seiichiro IZAWA ◽

Yu FUKUNISHI

Keyword(s):

Incompressible Fluid ◽

Acoustic Resonance ◽

Cavity Flows ◽

Resonance Model ◽

Deep Cavity ◽

Fluid Analysis

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608 Incompressible Fluid Analysis of Deep Cavity Flows including Acoustic Resonance Effect

The Proceedings of Autumn Conference of Tohoku Branch ◽

10.1299/jsmetohoku.2013.49.177 ◽

2013 ◽

Vol 2013.49 (0) ◽

pp. 177-178

Author(s):

Hiroko ISAWA ◽

Masaya SHIGETA ◽

Seiichiro IZAWA ◽

Yu FUKUNISHI

Keyword(s):

Incompressible Fluid ◽

Resonance Effect ◽

Acoustic Resonance ◽

Cavity Flows ◽

Deep Cavity ◽

Fluid Analysis

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Numerical Simulation of Incompressible Laminar Flow over Three-Dimensional Rectangular Cavities

Journal of Fluids Engineering ◽

10.1115/1.1845531 ◽

2004 ◽

Vol 126 (6) ◽

pp. 919-927 ◽

Cited By ~ 30

Author(s):

H. Yao ◽

R. K. Cooper ◽

S. Raghunathan

Keyword(s):

Reynolds Number ◽

Incompressible Flow ◽

Three Dimensional ◽

Reynolds Numbers ◽

Cavity Flow ◽

External Flow ◽

Cavity Flows ◽

Recirculating Flow ◽

Deep Cavity ◽

Shallow Cavity

This paper presents results of investigations of unsteady incompressible flow past three-dimensional cavities, where there is a complex interaction between the external flow and the recirculating flow inside the cavity. A computational fluid dynamics approach is used in the study. The simulation is based on the solution of the unsteady Navier-Stokes equations for three-dimensional incompressible flow by using finite difference schemes. The cavity is assumed to be rectangular in geometry, and the flow is assumed to be laminar. Typical results of computation are presented, showing the effects of the Reynolds number, cavity geometry, and inflow condition on the cavity flow fields. The results show that high Reynolds numbers, with deep cavity and shallow cavity flows can become unsteady with Kelvin-Helmholtz instability oscillations and exhibiting a three-dimensional nature, with Taylor-Go¨rtler longitudinal vortices on the floor and longitudinal vortex structures on the shear layer. At moderate Reynolds numbers the shallow cavity flow is more stable than deep cavity flows. For a given Reynolds number the flow structure is affected by the thickness of the inflow boundary layer with a significant interaction between the external flow and the recirculating flow inside the cavity.

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