Results 221 to 230 of about 157,231 (265)
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Ultrasonic velocity profiler for very low velocity field
Flow Measurement and Instrumentation, 2013Abstract An ultrasonic velocity profile measurement system has been realized that can measure velocities in a very slow flow. The system implements a novel phase difference method that overcomes the low velocity limitation in a conventional signal processing algorithm for the Doppler method.
Tomonori IHARA +2 more
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2017
Velocity Profile Theorem is a new concept. It is simple and can help solving the settling problem analysis through any settling system.
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Velocity Profile Theorem is a new concept. It is simple and can help solving the settling problem analysis through any settling system.
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Electronics System for Velocity Profile Emulation
2019The possibility of detecting the velocity profile in a fluid flowing in an industrial pipe is of high importance for several applications, like the accurate measurement of the volume flow or the rheological characterization of the fluid. Recently, industrial embedded systems have been presented that detect the velocity profile in pipes through Pulsed ...
Dario Russo +2 more
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Similarity of the Velocity Profile
2014Abstract : A new approach to study similarity of the velocity profile of the 2-D wall-bound boundary layer flow is presented. The approach is based on a simple concept; the area under a set of scaled velocity profile curves that show similarity behavior must be equal.
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The Production of Peaked Velocity Profiles
The Journal of the Royal Aeronautical Society, 1961In many internal flow problems, the velocity profile of the flow in a duct of a given cross section is of major importance. In combustion chamber flow, for example, the entry velocity profile is a critical factor in determining the relative amounts of primary and secondary combustion air. Further, in the flow in an axial compressor, the peaked velocity
P. G. Morgan, A. Saunders
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Flow Rate Profiler: an instrument to measure blood velocity profiles
Ultrasonics, 2001In this paper we present Flow Rate Profiler (FRP), an instrument for measuring the blood velocity by means of ultrasound-based techniques. The velocity is directly related to the shear rate, which is in turn proportional to the shear stress, a parameter expressing the pressure exerted by the blood on the vessel walls.
LOMBARDI, REMO ANGELO +2 more
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Velocity Profiles In Perforated Completions
Journal of Canadian Petroleum Technology, 1991Abstract The productivity of perforated completions is greatly reduced when fines ace mobilized causing particles to plug pore throats within a formation. Even in clean sands, relatively large quantities of particulate matter are present Mobilization of these fines occurs as fluid velocities exceed critical levels ...
J.H. Eng, D.B. Benalon, J.B. Strong
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On the inviscid instability of the hyperbolictangent velocity profile
Journal of Fluid Mechanics, 1964The Rayleigh stability equation of inviscid linearized stability theory was integrated numerically for amplified disturbances of the hyperbolic-tangent velocity profile. The evaluation of the eigenvalues and eigenfunctions is followed by a discussion of the streamline pattern of the disturbed flow.
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VELOCITY PROFILES WITH SUSPENDED SEDIMENT
Journal of Hydraulic Research, 1981Analysis of velocity profiles plotted in defect form indicates that the Karman coefficient is independent of the amount of suspended sediment in an open channel flow.
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[Velocity profiles in the microvessels dependent on the velocity and concentration of erythrocytes].
Fiziologicheskii zhurnal SSSR imeni I. M. Sechenova, 1983Distribution of velocities of erythrocytes dependent upon their distance from the vascular axis were studied in 25-40 mu large microvessels of the frog mesentery. The method of in vivo cinemicrography with subsequent analysis revealed that with a mean axial velocity of blood flow higher than 0.3-0.4 mm/sec the velocity profile was parabolic, similar to
V A, Mamisashvili +2 more
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