Results 221 to 230 of about 8,575 (265)

Natural Convection from a Horizontal Cylinder—Laminar Regime

Journal of Heat Transfer, 1981
A finite-difference numerical method has been adopted to generate flow patterns and heat transfer characteristics for laminar, steady-state, two-dimensional natural convection around a circular cylinder submerged in an unbounded Boussinesq fluid.
B. Farouk, S. I˙. Gu¨c¸eri
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On the optimization of mixing in laminar regimes

2013
Le sujet de cette thèse concerne la mise en œuvre d'une analyse numérique visant à optimiser les techniques de mélange utilisées dans les applications industrielles. Dans cette recherche, nous simulons tout d'abord le mélange d'une quantité scalaire à partir d'un modèle classique d'écoulement fluide appelé "sine flow".
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Optimal rotary control of the cylinder wake in the laminar regime

Physics of Fluids, 2002
In this paper we develop the Optimal Control Approach to the rotary control of the cylinder wake. We minimize the functional which represents the sum of the work needed to resist the drag force and the work needed to control the flow, where the rotation rate φ̇(t) is the control variable. Sensitivity of the functional to control is determined using the
Protas, B., Styczek, A.
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Thermal performance criterion for nanofluids in laminar flow regime

Journal of Mechanical Science and Technology, 2017
This paper theoretically presents a thermal performance criterion for nanofluids under the laminar flow condition, in which the nanofluids flow through a simple circular tube. The criterion is also defined by the fixed pumping power, temperature difference between the inlet and outlet, and surface area of the simple tube. In order to present the Figure
Seung-Hyun Lee, Hyun Jin Kim, Seok Pil Jang   +2 more
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The calculation of laminar separation bubbles in the wake inflation/deflation regime

26th Aerospace Sciences Meeting, 1988
A new interacting boundary-layer method is developed for calculating two-dimensional incompressible laminar separation bubbles. The method relies on a completely consistent mixed boundary value treatment of the outer inviscid flow. For attached flows, the new method is found to converge as fast as the classical Cauchy-Hilbert method and to yield the ...
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Intermittency in free vibration of a cylinder beyond the laminar regime

Journal of Fluid Mechanics, 2019
Vortex-induced vibration of a circular cylinder that is free to move in the transverse ($Y$) and streamwise ($X$) directions is investigated at subcritical Reynolds numbers ($1500\lesssim Re\lesssim 9000$) via three-dimensional (3-D) numerical simulations. The mass ratio of the system for all the simulations is $m^{\ast }=10$. It is observed that while
null Navrose, Sanjay Mittal
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The Bénard-Von Kármán Instability in Laminar Regimes

1988
Experimental results show that the Benard-Von Karman instability can be studied through a temporal model and thus confirm the absolute character of the instability.
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On the flow around a circular cylinder. Part I: Laminar and transitional regime

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1999
AbstractA concise review about the properties of the laminar and transitional wake (Re < 260) behind a circular cylinder is presented. Some open problems of this flow are outlined.
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On a discontinuity in the laminar regime of the flow around a circular cylinder

Europhysics Letters (EPL), 1996
There has been a long-standing controversy as to the existence of a transition in the laminar regime of the flow around a circular cylinder. This was thought to be marked by a discontinuity in the Strouhal-Reynolds number relationship, but it is now known that this discontinuity disappears when the flow is two-dimensional.
A. E Corlett, F. H Barnes
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Breakdown of the Laminar Flow Regime in Permeable-Walled Ducts

Journal of Applied Mechanics, 1973
The stability of laminar flow in a parallel-plate channel having one permeable bounding wall is investigated by means of linear theory. The analysis takes account of the coupling of the disturbance fields in the channel and in the permeable material and of velocity slip at the surface of the permeable wall.
E. M. Sparrow, G. S. Beavers, T. S. Chen, J. R. Lloyd   +3 more
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