Results 261 to 270 of about 27,884 (312)

Flow field inside a whirling labyrinth seal

32nd Joint Propulsion Conference and Exhibit, 1996
A 3D LDV was used to measure the velocity field inside a whirling labyrinth seal operating at a whirl ratio of one, an eccentricity ratio of 0.5, a Taylor number of 6600, and a Reynolds number of 24,000. The instantaneous velocity measurements were phase averaged to determine the mean velocity and Reynolds stress tensor for various rotor positions. The
Gerald Morrison, Purander Das, Robert DeOtte, Jr.   +2 more
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Flow through whirling tubes

Journal of the Society of Chemical Industry, 1950
AbstractIn various experiments in these laboratories it has become necessary to consider the effect on the energy dissipated in friction of a force acting normally to the direction of the flow‐path of a liquid. It appeared that such a case was analogous to that of a liquid constrained to flow in a coiled tube, wherein the energy dissipation is higher ...
H. Zychlin, J. Anderson Storrow
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Measurement of the Flow Field of Fire Whirl

Fire Technology, 2015
In this work, a small-scale fire whirl with pool diameter of 5 cm was produced by a fixed-frame type facility with two split cylinders, and the tangential, axial and radial velocity profiles in the central vertical plane of the fire whirl at different gap sizes (2.54 cm, 3.81 cm, 5.08 cm, 6.35 cm, 7.62 cm) of the two split cylinders were measured using
Pengfei Wang, Naian Liu, Katherine Hartl, Alexander Smits   +3 more
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Big whirls talking to smaller whirls: detecting cross-scale information flow

2022
<p><em>Big whirls have little whirls that feed on their velocity,</em></p><p><em>and little whirls have lesser whirls and so on to viscosity.</em></p><p>These famous words written in 1922 by Lewis Fry Richardson have become ...
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Mathematical analysis of whirled turbulent flow through a pipe

Journal of Engineering Physics, 1979
The effect of rotation of the stream on the development of turbulent flow in a pipe is analyzed by a numerical method. Calculated distributions of average turbulence velocity and energy are compared with experimental data.
V. V. Tret'yakov, V. I. Yagodkin
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On-chip cell manipulation by vibration-induced whirling flow

2014 International Symposium on Micro-NanoMechatronics and Human Science (MHS), 2014
We present a cell manipulation method by using vibration induced whirling flow. The local flow is induced just around a micropillar by applying circular vibration to the micropillar. By patterning a micropillar array on a chip and applying circular vibration to the chip, flow for cell transport can be generated along the array.
Takeshi Hayakawa, Shinya Sakuma, Fumihito Arai   +2 more
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Effect of flow circulation on combustion dynamics of fire whirl

Proceedings of the Combustion Institute, 2013
In this paper, the effect of flow circulation on the combustion dynamics of fire whirl is systematically investigated by experiments. New correlations for the burning rate, flame height, radial temperature and mass flow rate are established for fire whirl.
Kuibin Zhou, Naian Liu, Jesse S. Lozano, Yanlong Shan, Bin Yao, Kohyu Satoh   +5 more
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Moment coefficients of incompressible-flow seals with conically whirling rotors

International Journal of Mechanical Sciences, 1991
Abstract A computational model is developed to investigate the dynamic behavior of a rotor that is in contact with a fluid, to infinitesimally small disturbance modes. The rotor here is that of an annular seal, commonly used in turbomachinery applications, with an incompressible flow in the annular clearance gap.
E.A. Baskharone, S.J. Hensel
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Fire-whirl Movement along Line Fires – A Separated-flow Rotating-cylinder Analogy

Combustion Science and Technology, 2020
A model is proposed for estimating how fire whirls may begin to move along line fires and the velocities at which they may propagate steadily against the direction of the prevailing wind, instead o...
K. Kuwana, K. Saito, F. A. Williams
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Complex in-line and whirling response of structures to oscillatory flow

Journal of Sound and Vibration, 1990
Abstract A two-degree-of-freedom model of offshore structures is studied for its dynamic response in a steady-current and regular-wave environment. The two degrees of freedom represent motions in-line with, and orthogonal to, the current direction. The hydrodynamic forces on the structure are modeled by the modified Morison equation and, additionally,
Y.M. Huang, A.K. Bajaj, C.M. Krousgrill
openaire   +1 more source