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Showing 1 to 20 of 170 for “"Velocity distribution"”.
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The measurement of flow velocity distribution
… averaging times. Consequently, correlation and velocity profile measurements are made from an experimental flow rig. A waveform analysis program is used to analyse these measurements. The Fourier transform deconvolution is shown in this case to have poor noise immunity. For this reason, an …
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Velocity distribution in steep rough channel
… thesis consists of an experimental study of the velocity distribution in tranquil, stable tumbling and rapid flow regimes in a steep rectangular channel with artificial roughness elements. Four shapes of roughness elements, rectangular, parallelogram, triangular, and semi-circular, were used. …
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An investigation of velocity distribution in test section of Wright Brothers Wind Tunnel
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1939.
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Velocity distribution prediction in rectangular and compound channels under smooth and rough flow conditions
… in river engineering require predictions of velocity distributions in single and compound open channels. In this study, velocity distributions in rectangular and compound open channels under different flow regimes, in terms of roughness and turbulence conditions, were investigated …
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Utilizing an ExB probe for obtaining ion velocity distribution function for an electric propulsion system
… diagnostics capable of resolving ion-specific velocity distributions with high fidelity. This dissertation presents a comprehensive theoretical and experimental investigation of the ExB probe as a quantitative diagnostic for obtaining ion velocity distribution functions (IVDFs) in EP systems. …
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Experimental investigation of the fluid velocity distribution in stirred tank reactors equipped with retreat-blade impellers using laser doppler velocimetry
… in any given operation. In this work, the velocity distribution inside the typical glass-lined vessel/impeller system was experimentally quantified using Laser Doppler Velocimetry (LDV), which is a non-intrusive experimental method used to determine the local velocity distribution …
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Part I. Theory of Fluctuations in a Plasma. Part Ii. Wave Properties of Aplasma With a Doubly-Humped Velocity Distribution
Made available in DSpace on 2014-12-04T21:03:30Z (GMT). No. of bitstreams: 1 6206165.pdf: 3216314 bytes, checksum: 336c5154a2ac4fbc42e81896f62f79a6 (MD5) Previous issue date: 1962
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Prediction of velocity distribution from the statistics of pore structure in 3D porous media via high-fidelity pore-scale simulation
… Despite the fundamental importance of the velocity distribution in controlling early-time and late-time transport properties (e.g., early breakthrough and superdiffusive spreading), direct relations linking velocity distribution with the statistics of pore structure in 3D porous media have …
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Four-Dimensional Passive Velocity Tomography of a Longwall Panel
Velocity tomography is a noninvasive technology that can be used to determine rock mass response to ore removal. Velocity tomography is accomplished by propagating seismic waves through a rock mass to measure velocity distribution of the rock mass. Tomograms are created by mapping this velocity …
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Optical measurement of ash particle size and velocity in gas-solid flow
… and its application to measuring the size and velocity distribution of moving particles in a gas-solid environment. The prototype system consists of a digital image acquisition module and MATLAB RTM image-processing module. Two specific applications were conducted. The first is the measurement …
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A Hybrid Vortex Solution for Radial Equilibrium in Axial Compressors
… Vortex. However, it ignores the fact that axial velocity varies with radius. The Hybrid Vortex includes axial velocity distribution with radius, which gives a more effective design. A single stage is first designed using the Free Vortex design method. A low hub-to-tip ratio is set to ensure …
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Empirical Constraints on O(5+) Outflows and Velocity Distributions in a Solar-Minimum Coronal Streamer
… in terms of empirical constraints on the O5+ ion velocity distributions and outflow speeds. Four conclusions result from this work: (1) our analysis shows O5+ velocity distribution anisotropy in the streamer legs and stalk and also shows that the microscopic velocity distribution (which excludes …
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Masses of globular clusters
Central velocity dispersions have been derived for 10 globular clusters from high dispersion (6.7A mm-1) coude spectra of the integrated light. Two methods were used. The first involved the comparison of the cluster spectra with star spectra convolved with an appropriate velocity distribution …
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Masses of globular clusters
Central velocity dispersions have been derived for 10 globular clusters from high dispersion (6.7A mm-1) coude spectra of the integrated light. Two methods were used. The first involved the comparison of the cluster spectra with star spectra convolved with an appropriate velocity distribution …
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Flat plate turbulent boundary layer static temperature distribution with heat transfer
An expression for the static temperature-velocity distribution for a zero pressure gradient turbulent boundary layer is derived based on the differential equations for local heat transfer and shear. The present theoretical method of computation is found to give results that correspond well with …
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Novel Inverse Airfoil Design Utilizing Parametric Equations
… design method is specified as a pressure or velocity distribution over the airfoil at given flight conditions. The improved efficiency of inverse design comes at a cost. Designing a target pressure distribution is no trivial matter and has severe implications on the end performance. There is …
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Optimization of Flow Quality In the Test Section of The 30-Inch x 40- Inch Subsonic Tunnel
… and slightly unsteady flow with a non-uniform velocity distribution across the test section. By utilizing a hot-film anemometer system and a total pressure rake, turbulence and velocity distribution data were obtained. Rounded corners and a turning vane were installed in front of the inlet to …
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Boosting (in)direct detection of dark matter
… stars can be used as tracers for the dark matter velocity distribution. I use the Sloan Digital Sky Survey to obtain the first empirical velocity distribution of dark matter, which weakens the expected direct detection limits by up to an order of magnitude at masses </~ 10 GeV. Finally, I expand …
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