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Showing 1 to 20 of 78 for “"Particle motion"”.
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A Study on Vibration-induced Particle Motion under Microgravity
… To investigate the effects of g-jitter on the motion of small particles, experiments were conducted under normal gravity by suspending spherical stainless steel particles of different sizes with a thin wire or synthetic silk thread in a rectangular fluid cell. The fluid viscosities were 350 and …
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Particle Motion in Flows: Contributions to Airborne Aerosol Measurement
<p>Accurate, in situ measurement of airborne particles is critical in understanding the global atmosphere. An airborne instrument is designed to sample and measure the aerodynamic diameter of particles in the size range of 1-30 mm. Knowledge of the aerodynamic size of a particle includes the impact …
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Single particle motion of polymeric, colloidal, and biological materials
Small particles and their dynamics are of widespread interest due both to their unique properties and their ubiquity. Here, we investigate several classes of small particles: colloids, polymers, and liposomes. All these particles, due to their size on the order of microns, exhibit significant …
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Experimental Measurements of Particle Motion in a Turbulent Pipe Flow
Made available in DSpace on 2014-12-11T17:26:11Z (GMT). No. of bitstreams: 1 7500326.pdf: 6398471 bytes, checksum: 82d36ad8d6a59fe907de2c0f66bd616f (MD5) Previous issue date: 1974
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Current distribution and particle motion in a barbed plate electrostatic precipitator
… barbed plate precipitator are compared. Particle motion is observed via a laser light-sheet and measured with a laser Doppler anemometer. Streamwise and transverse mean and fluctuating particle velocities, particle motion length scales and diffusivities are measured at electrical and flow …
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An experimental study of solid particle motion in a turbulent liquid pipe flow
An experimental study of the motion of 100 micron diameter glass and stainless steel spheres in a fully developed turbulent liquid pipe flow was conducted. Furthermore, the liquid, water, was directed vertically downward through a 5.08 cm inside diameter plexiglas tube. One goal was to measure the …
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Shaking, slamming, and vibrating yield-stress fluids: Inducing particle motion in rheologically-complex materials
Made available in DSpace on 2018-03-13T15:25:20Z (GMT). No. of bitstreams: 9 KOCH-DISSERTATION-2017.pdf: 50624702 bytes, checksum: f3e68c494df9420b9f4d386c1b05f99c (MD5) jakoch2_LaTeX_src.zip: 52005063 bytes, checksum: 9af5cc375da07488897271c67c680e44 (MD5) LICENSE.txt: 4208 bytes, checksum: …
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Particle motion in the near bed region of a turbulent open channel flow: Implications for bedload transport by saltation and sediment entrainment into suspension
… processes involved in the transport of sediment particles in the near bed region of a turbulent open channel flow. Two different aspects of this phenomenon are examined, namely the mode of transport denoted as saltation, and the process of particle entrainment into suspension. The main approach …
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Assessing anthropogenic noise impacts and relevant soundscape cues for marine invertebrates: leveraging squid and coral reefs as model systems
… by mammals and some fish), but few report particle motion, the back-and-forth vibratory component of sound detected by marine invertebrates. I investigated invertebrate use of and response to sounds in two facets: 1) behavioral responses of longfin squid, Doryteuthis pealeii to …
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Assessing anthropogenic noise impacts and relevant soundscape cues for marine invertebrates: leveraging squid and coral reefs as model systems
… by mammals and some fish), but few report particle motion, the back-and-forth vibratory component of sound detected by marine invertebrates. I investigated invertebrate use of and response to sounds in two facets: 1) behavioral responses of longfin squid, Doryteuthis pealeii to …
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On the Influence of Faraday Waves on Transport in Resonant Acoustic Mixing
… oscillatory forcing to combine fluids, particles, and powders. Although progress has been in adjacent RAM fields, there are still gaps in understanding how Faraday surface instabilities affect momentum transport to the bulk fluid and particles therein. This work investigates the energy …
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PERFORMANCE ANALYSIS AND THE EFFECTS OF KEY PARAMETERS IN SOLID PARTICLE BEDS
Fluid-solid particle beds have a broad range of industrial applications as packed and fluidized beds. The particle-particle collision, particle-wall interaction, and virtual mass force which initiates from particle motion influencing neighboring particles make it very difficult to analyze the …
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Particle dispersion in isotropic turbulence and unsteady particle dynamics at finite Reynolds number
A solution to particle dispersion in an isotropic turbulence under Stokes drag, Basset force and gravitational force is obtained in closed form using the independence approximation. The Basset force has no effect on the fluid velocity structure seen by the particles or the long-time particle …
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Robust vector sensor array processing and performance analysis
… which measure scalar pressure along with particle motion (a vector quantity), feature many advantages over omnidirectional hydrophone sensors. A sizable literature exists on the theory of processing signals for many vector sensor array applications. In practice, however, mismatch (the …
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Experimental Investigation of Micro-Channel Blockage Phenomena
… of blockage and a study of fluid and particle motion within micro-channels having a variety of cross-sectional geometries have been conducted over a wide range of flow conditions. A micro-channel can be blocked by particles in dilute particle-laden fluid, if they have a relatively high …
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Magnetic and Mechanical Properties of Ultrasoft Magnetorheological Elastomers
… composite materials consisting of magnetic particles embedded in a non-magnetic elastomeric matrix, can reversibly modulate their mechanical and magnetic properties through tuning the applied magnetic field <em>H</em>. Recently, ultrasoft MREs have received tremendous attention due to their …
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The study of the influence of the lifter height on the charge motion, velocity profile and power draw of a laboratory tumbling mill using DEM simulations
… height has been shown to influence the charge motion and power draw of the mill. Most of the predictive power models used in industry do not consider lifter heights as a variable. In comminution, Positron Emission Particle Tracking (PEPT) is used to track the charge motion of particles in …
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Shallow vibrated particulate beds - bed dynamics and heat transfer
… cyclic characteristics, caused by the bed motion. Horizontal floor-pressure gradients cause the bed to pile up or bunker within the vessel. In bunkered beds, particle motion is determined by horizontal gas flows, and a compaction wave which propagates diagonally through the bed during the …
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Kinematics and visualization of strain in three dimensions
… magnitudes of the finite strain axes, paths of particle motion, instantaneous strain axes, vorticity vector, and flow apophyses. The strain visualization program has been applied to the wrench-dominated transconvergence of the Pacific-Sierra Nevada plate boundary. I find that, within the …
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