Results 121 to 130 of about 16,744 (167)
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Journal of Fluids Engineering, 1934
Abstract Mechanically induced air flow is pulsating even when it may seem steady to the physical senses. This pulsation causes errors in velocity measurement that are often as great as twenty per cent when the conventional pitot tube or orifice is used with a liquid manometer, and it causes an increase in the velocity-energy and fluid ...
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Abstract Mechanically induced air flow is pulsating even when it may seem steady to the physical senses. This pulsation causes errors in velocity measurement that are often as great as twenty per cent when the conventional pitot tube or orifice is used with a liquid manometer, and it causes an increase in the velocity-energy and fluid ...
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Spectral dynamic of pulsating turbulent pipe flow
Computers & Fluids, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MANNA, MARCELLO, Vacca, A.
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Orifice and Flow Coefficients in Pulsating Flow
Journal of Fluids Engineering, 1952Abstract The flow equations pertaining to the behavior of a fluid passing through an orifice are set forth so as to relate the flow coefficient to the orifice configuration and to flow losses. The general nature of the flow coefficient is developed both for the case of instantaneous flow and pressure differences and for mean flow and ...
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Measuring pulsating flow with ultrasound
Measurement, 2001This paper continues the research presented at the IMEKO XV World Congress in Osaka/JP. It gives deeper insights into the topic of measuring the average volume flow with ultrasound based flow meters in a pulsating fluid. Pulsations are very common in industrial applications so that flow meters have to cope with this kind of disturbances.
Volker Skwarek +2 more
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Behavior of solid particles in pulsating flows
Journal of Sound and Vibration, 1995Summary: The characteristics of solids particles in pulsating flows are investigated. A model based on the momentum equation is developed and applied to solid inert particles in the gas flow of the Rijke-type pulsating combustor, by using a computational scheme based on a fourth order Runge-Kutta method.
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Effect of Pulsations on Flow of Gases
Transactions of the American Society of Mechanical Engineers, 1922Abstract The movement of gases and liquids when calculated by the existing hydraulic formulas presupposes a steady or continuous flow of the fluid. Anything which causes this flow to proceed in puffs, waves, or pulsations will result, by the action of metering devices, in errors often of great magnitude which generally do not admit of ...
Horace Judd, Donal B. Pheley
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The Physics of Fluids, 1980
An experimental study has been made of air flow over a rearward facing step where the free-stream velocity has been perturbed by a sinusoidal fluctuation of 1 Hz. Velocities have been measured using a laser Doppler anemometer employing a gated photon correlation signal detection system.
T. Mullin, C. A. Greated, I. Grant
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An experimental study has been made of air flow over a rearward facing step where the free-stream velocity has been perturbed by a sinusoidal fluctuation of 1 Hz. Velocities have been measured using a laser Doppler anemometer employing a gated photon correlation signal detection system.
T. Mullin, C. A. Greated, I. Grant
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Frictional factor and flow characteristics in pulsating flow with high amplitude of pulsations
Materials Today: Proceedings, 2023V.S. Sonawane +2 more
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Simulation of pulsating channel flows
Russian Aeronautics (Iz VUZ), 2009A method for simulating spatial-temporary characteristics of pulsating flows in the varying-in-length-area channels based on the solution of one-dimensional nonstationary equations of gas dynamics is presented. The calculation results are compared with the experimental data, and it is shown that the method being proposed rather adequately simulates ...
N. I. Mikheev +3 more
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HEAT TRANSFER WITH PULSATING FLOW
Chemical Engineering Communications, 1980This report concerns the frequency dependence of the heat transfer coefficient for water flowing in a tube. The investigation of this phenomenon was conducted in a double pipe heat exchanger in which the center stream was pulsed. The frequencies used ranged from 10 to 160 cycles per minute, and the average flow rates corresponded to a Reynolds number ...
J.C. LUDLOW, D.J. KIRWAN, J.L. GAINER
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