The boundary layer induced by a convected two-dimensional vortex

Doligalski, T. L.; Walker, James D.

doi:10.1017/s0022112084000240

Cited by 143 publications

(98 citation statements)

References 14 publications

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“…The results also confirm that, for the present configuration, no boundary layer separation occurs, the interaction parameter is rather small (c=J) as compared with the values used by Doligalski and Walker [6].…”

Section: J Y=osupporting

confidence: 89%

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Experimental characterisation of the convective heat transfer in a vortex ~ wall interaction

Reulet¹,

Marchand²,

Millan³

1998

Proceedings of the 1998 International Conference on Quantitative InfraRed Thermography

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The development of turbulence models and wall laws for the numerical simulation of flows in complex geometries requires a detailed experimental analysis of turbulence and of the phenomena that appear in turbulent boundary layers. There is a strong need to develop new measurement systems allowing the determination of unsteady wall heat transfer coefficients.In order to improve the knowledge of the unsteady phenomena occurring in perturbed boundary layers, a fundamental study is conducted on the interaction of a single vortex with a flat plate. An experimental methodology using a specific thermal sensor whose surface temperature is measured by an infrared thermography system is presented. It allows the characterisation of the unsteady convective heat transfer coefficient whose evolution is compared with the fluctuations of the wall friction coefficient, calculated from velocity profiles measured by laser Doppler velocimetry.

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Section: J Y=osupporting

confidence: 89%

“…Doligalski and Walker [6] made a numerical study for a non heated plate. An important parameter was the interaction parameter r, the ratio between the convection velocity of the vortex and the mainstream velocity, which ranged from 0 to 1.…”

Section: Resultsmentioning

confidence: 99%

Experimental characterisation of the convective heat transfer in a vortex ~ wall interaction

Reulet¹,

Marchand²,

Millan³

1998

Proceedings of the 1998 International Conference on Quantitative InfraRed Thermography

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“…During such a collision, secondary, oppositely signed vorticity is generated at the wall in order to satisfy the noslip boundary condition (see e.g. Doligalski and Walker (1984), Chuang and Conlisk (1989), Peridier et al (1991aPeridier et al ( ), (1991b and Atassi et al (1997)). Typically, this secondary vorticity may be combined with the primary vorticity in order to form two secondary dipoles that propagate away from the wall along curved trajectories.…”

Section: Introductionmentioning

confidence: 99%

Vortex dipole collision with a sliding wall

Vicente¹,

Kamp²,

Heijst³

2013

Fluid Dyn. Res.

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The collision of a dipolar vortex with a sliding wall is investigated numerically. Previous studies have shown that perpendicular vortex collisions with fixed walls may lead to a rebound of the primary dipole during which the symmetry of the vorticity field with respect to the dipole's axis is preserved. However, a wall sliding tangentially breaks this symmetry, leading to distinctive flow regimes for different wall speeds. The conditions for which the transition between these two regimes occur are studied, both numerically and analytically, in terms of the wall speed and the Reynolds number of the dipolar flow.

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“…[22][23][24][25][26][27]). All of these studies used the traditional Eulerian formulation of the unsteady boundary-layer equations.…”

Section: (A) Classical Non-interactive Boundary Layersmentioning

confidence: 99%

Unsteady separation in vortex-induced boundary layers

Cassel

Conlisk

2014

Phil. Trans. R. Soc. A.

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This paper provides a brief review of the analytical and numerical developments related to unsteady boundary-layer separation, in particular as it relates to vortex-induced flows, leading up to our present understanding of this important feature in high-Reynolds-number, surface-bounded flows in the presence of an adverse pressure gradient. In large part, vortex-induced separation has been the catalyst for pulling together the theory, numerics and applications of unsteady separation. Particular attention is given to the role that Prof. Frank T. Smith, FRS, has played in these developments over the course of the past 35 years. The following points will be emphasized: (i) unsteady separation plays a pivotal role in a wide variety of high-Reynolds-number flows, (ii) asymptotic methods have been instrumental in elucidating the physics of both steady and unsteady separation, (iii) Frank T. Smith has served as a catalyst in the application of asymptotic methods to high-Reynolds-number flows, and (iv) there is still much work to do in articulating a complete theoretical understanding of unsteady boundary-layer separation.

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The boundary layer induced by a convected two-dimensional vortex

Cited by 143 publications

References 14 publications

Experimental characterisation of the convective heat transfer in a vortex ~ wall interaction

Experimental characterisation of the convective heat transfer in a vortex ~ wall interaction

Vortex dipole collision with a sliding wall

Unsteady separation in vortex-induced boundary layers

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