Results 221 to 230 of about 7,830 (266)

Orifice and Flow Coefficients in Pulsating Flow

Journal of Fluids Engineering, 1952
Abstract 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, 2001
This 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, Harald Windorfer, Volker Hans   +2 more
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Behavior of solid particles in pulsating flows

Journal of Sound and Vibration, 1995
Summary: 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, 1922
Abstract 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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Pulsating flow over a step

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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Frictional factor and flow characteristics in pulsating flow with high amplitude of pulsations

Materials Today: Proceedings, 2023
V.S. Sonawane, M.R. Nandgoankar, C.M. Sewatkar   +2 more
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Simulation of pulsating channel flows

Russian Aeronautics (Iz VUZ), 2009
A 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, V. M. Molochnikov, I. A. Davletshin, O. A. Dushina   +3 more
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HEAT TRANSFER WITH PULSATING FLOW

Chemical Engineering Communications, 1980
This 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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Flow in a channel with pulsating walls

Journal of Fluid Mechanics, 1978
In this paper calculations are made of the two-dimensional flow field of an incompressible viscous fluid in a long parallel-sided channel whose walls pulsate in a prescribed way. The study covers all values of the unsteadiness parameter α and the steady-streaming Reynolds number.
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Pulsating flow in a heat exchanger

Wärme- und Stoffübertragung, 1980
The problem of heat transfer in industrial processes, heat exchangers, and combustion chambers is formulated for a case where flow inside the chamber consists of a periodic motion imposed on a fully developed turbulent flow. It is shown that the velocity pulsations induce harmonic oscillations in temperature, thus breaking the temperature field into a ...
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