Results 251 to 260 of about 1,035,663 (297)

Performance of finite journal bearings in non-laminar lubrication regime

Tribology International, 1983
Abstract Fluid dynamic lubrication of journal bearings in a superlaminar regime, ie a transition or turbulent regime, is the subject-matter of this study. Results obtained by solving an appropriately modified Reynolds bidimensional equation have been put in the form of operating diagrams which allow the correct design of journal bearings in real ...
G. CAPONE, V. D'AGOSTINO, RUSSO, MICHELE
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Co‐current stratified flow of immiscible liquids: Velocity distribution and pressure gradient in the laminar‐laminar and laminar‐turbulent regimes

The Canadian Journal of Chemical Engineering, 1981
AbstractFurther studies on the co‐current stratified flow of two immiscible liquids in closed conduits with emphasis on the laminar‐laminar and laminar‐turbulent regimes are reported. Experimental velocity distributions obtained using a photo‐chromic dye technique and pressure gradients for the flow of oil/water and oil/ethanol‐water systems in a ...
Chester C‐C Wang, M. E. Charles
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Periodic Laminar Regime

1997
Abstract The steady, elongated and closed near-wake becomes unstable whenRe> Reosc, where the subscriptosc stands for oscillation. The transverse oscillation starts at the end of the near-wake and initiates a wave along the trail as shown in Fig. 1.6(a).
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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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