Results 251 to 260 of about 50,864 (305)
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Measurement Techniques, 1961
The above considerations show that until reliable data are available there is no point in including in the All-Union standard specification for measuring flows a recommendation for evaluating the error in measuring pulsating flows by means of the damping criterion and to classify the differential manometers combined with constricting devices among ...
S. B. Bulatov +2 more
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The above considerations show that until reliable data are available there is no point in including in the All-Union standard specification for measuring flows a recommendation for evaluating the error in measuring pulsating flows by means of the damping criterion and to classify the differential manometers combined with constricting devices among ...
S. B. Bulatov +2 more
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Bluff body aerodynamics in pulsating flow
Journal of Wind Engineering and Industrial Aerodynamics, 1988Abstract The effect of pulsating flow superposed upon a mean flow on the side surface pressure fluctuations of two-dimensional (2-D) rectangular cylinders with slenderness ratios (width/height ratio, B/D) ranging from 0.5 to 20 has been studied. The purpose of this study was to understand the mechanism of interaction between external flow pulsations ...
M. Matsumoto, N. Shiraishi, H. Shirato
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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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Pulsating wave propagation in reactive flows: Flow-distributed oscillations
Physical Review E, 2000Stationary waves in a reactive flow with equal transport coefficients were recently generated by passing the oscillating Belousov-Zhabotinsky reaction medium through a tubular packed bed reactor while keeping the concentrations constant at the inflow boundary [M. Kaern and M. Menzinger, Phys. Rev. E 60, 3471 (1999)].
, Kaern, , Menzinger
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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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Microfluidic mixing using pulsating flows
Microfluidics and Nanofluidics, 2016Mixing of biological species in microfluidic channels is challenging since the mixing process is limited by the small mass diffusion coefficient of the species and by the dominance of viscous effects, captured by the low value of Reynolds number characteristic of laminar liquid flow in microchannels.
Farah Cheaib +4 more
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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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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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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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Pulsating slurry flow in pipelines
Experiments in Fluids, 1989An experimental study on pulsating turbulent flow of sand-water suspension was carried out. The objective was to investigate the effect of pulsating flow parameters, such as, frequency and amplitude on the critical velocity, the pressure drop per unit length of pipeline and hence the energy requirements for hydraulic transportation of a unit mass of ...
O. A. El Masry, K. El Shobaky
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