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Showing 1 to 20 of 97 for “"Pulsating"”.
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Pulsating aurora: Source region & morphology
<p>Pulsating aurora, a common phenomenon in the polar night sky, offers a unique opportunity to study the precipitating particle populations responsible for this subtle yet fascinating display of lights. The conjecture that the source of these electrons originates near the equator, made decades …
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Mass transfer in turbulent pulsating flows
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:58:36Z Item is restricted indefinitely.
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Nonlinear behaviour of pulsating white dwarfs
Using a phenomenological approach, I have investigated the nonlinear properties of the pulsations of two white dwarfs, namely DA G29-38 and DB GD358. The data at my disposal comprised numerous single- and multi-sites time series photometric campaigns, including light curves from four Whole Earth …
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Diffusion in pulsating flow in a conduit
… that the model discussed in this paper, that of pulsating flow in a distensible tube is applicable to such flows. Nutrition of the arterial wall depends on the rate of diffusion of luminal plasma to and through the wall. This research is of importance in understanding the functioning of the …
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Study of Steady and Pulsating Impinging Jets
An experimental investigation on the fluid mechanics of steady and pulsed impinging jets is presented in this thesis. An experimental facility was custom-builtin order to generate axisymmetric and incompressible impinging jets (pulsed and steady). In order to ensure that the velocity profiles at …
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Fluid dynamics of pulsating jets and voice
Vortical structure plays a significant role in flow mechanisms that impact our everyday life.
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Space- and ground-based observations of pulsating aurora
<p>Pulsating aurora is a frequently occurring phenomenon generally believed to occur mainly in the aftermath of a substorm, resulting in widespread auroral luminosity corresponding to a significant transfer of power from the magnetosphere to the ionosphere. A handful of theories have been proposed …
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Managing the pulsating effect in major sport event organisations
… research was to determine how the nature of a pulsating major sport event impacts on management practices in each of the essential human resource (HR) stages. The secondary aim was to reveal the extent to which these management practices were tailored to the pulsating nature of events. The …
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A study of the pulsating growth of cumulus clouds
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1960.
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Design and evaluation of a pulsating flow wind tunnel
A wind tunnel was designed and built to produce a pulsating flow. The pulsation was achieved by a series of shutters (rotating with constant angular velocity) placed upstream of the settling chamber inlet. The system was optimized to obtain nearly sinusoidal velocity waveforms with the highest …
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Heat transfer from a circular cylinder in a pulsating crossflow
… transfer all around the cylinder are found in pulsating flow. point. More significant increases occur near the separation point. A convection calibration for the circular foil heat flux gage used in the heat transfer experiments is included. The convection calibration shows a non-linear gage …
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Dynamic response of small turbine flowmeters in pulsating liquid flows
… found of the response of meters to sinusoidally pulsating flows. "Small" turbine meters are expected to behave differently from "large" meters for a number of reasons: a smaller meter would generally have: (1) a larger percentage of tip clearance leakage flow; (2) less fluid momentum between the …
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Aerothermodynamics and operation of turbine system under unsteady pulsating flow
… of a turbine system operating under highly pulsating flow environment typically found in vehicular turbochargers is made to: identify the key operating parameters, enable the formulation of a reduced order model, delineate the sources of loss and suggest strategies for performance …
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Studies of the Wall Shear Stress in a Turbulent Pulsating Pipe Flow
Measurements are presented of the time variation of the wall shear stress caused by the imposition of a sinusoidal oscillation on a turbulent pipe flow. The amplitude of the oscillation is small enough that a linear response is obtained and the dimensionless frequency, (omega)('+), is large …
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The Determination of Periodic Pulsating Flow in Complex Piping Systems Bythe Impedance Method
Made available in DSpace on 2014-12-09T17:13:46Z (GMT). No. of bitstreams: 1 6901485.pdf: 3825252 bytes, checksum: 8a12f6b1345fcb7f513c3ce814c2e771 (MD5) Previous issue date: 1968
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Turbulent Heat Transfer in Suspension Flow Under the Influence of a Pulsating Magnetic Field
Made available in DSpace on 2014-12-05T19:16:01Z (GMT). No. of bitstreams: 1 6202916.pdf: 5019933 bytes, checksum: fbbdc030a09963caf64581329a4ebd72 (MD5) Previous issue date: 1962
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Heat transfer from in-line and perpendicular arrangements of cylinders in steady and pulsating crossflow
An investigation was conducted to determine the effect of organized flow pulsations on mean heat transfer from a single cylinder, in-line arrangements and perpendicular arrangements of cylinders. Pulsation frequencies of up to twice the natural vortex shedding frequency and zero to peak. amplitudes …
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Seeking Understanding of Acoustics and Spray Character in a Three-Stream Pulsating Transonic Airblast Injector
… for, primary atomization within a self-sustained pulsating transonic three-stream injector. Thus, a computational effort involving 86 simulations, including multiple validation exercises, has been executed in order to develop a numerical foundation and then study the effects of nozzle geometry, …
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