Academic literature on the topic 'Pulsed flow'

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Dissertations / Theses on the topic "Pulsed flow"

1

Kumar, Pankaj. "Chaos in Pulsed Laminar Flow." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/39260.

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Fluid mixing is a challenging problem in laminar flow systems. Chaotic advection can play an important role in enhancing mixing in such flow. In this thesis, different approaches are used to enhance fluid mixing in two laminar flow systems. In the first system, chaos is generated in a flow between two closely spaced parallel circular plates by pulsed operation of fluid extraction and reinjection through singularities in the domain. A singularity through which fluid is injected (or extracted) is called a source (or a sink). In a bounded domain, one source and one sink with equal strength operat
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2

Finnigan, Sean Matthew. "Pulsed flow ultrafiltration in baffled tubular membranes." Thesis, University of Bath, 1990. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254875.

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Weeks, Colin. "Pulsed-flow microreactor studies of propene (Amm)oxidation." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266799.

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4

McCarthy, Larry K. "Steady Flow and Pulsed Performance Trends of High Concentration DMFCs." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10434.

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Direct Methanol Fuel Cells (DMFCs) are a promising source of energy due to their potentially high energy density, facilitated fuel delivery and storage, and precluded fuel processing. However, DMFCs have several challenges which need to be resolved before they can replace existing energy sources. Some of the challenges include lower power density, relatively high cost, and uncertain reliability. These issues are all promoted, at least in part, by the methanol crossover phenomenon, wherein membrane permeability allows the undesirable species transport of methanol from anode to cathode. This phe
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5

Castera, Philippe. "Energy coupling mechanisms in pulsed surface discharges for flow control." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2015. http://www.theses.fr/2015ECAP0041/document.

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Ce travail s'intéresse aux effets mécaniques créés par les décharges de surface et à leur efficacité comme actionneur. Une géométrie particulière d'électrodes permet de créer de manière pulsée un filament linéaire de plasma et de le chauffer très rapidement par effet Joule (à raison de plusieurs Joules en moins d'une microseconde). Ce chauffage rapide entraîne la formation d'ondes de choc qui peuvent interagir avec l'écoulement ambiant.Nous étudions le comportement électrique de la décharge de surface afin d'évaluer l'énergie déposée dans le filament de plasma par effet Joule. Pour ce faire, n
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6

Nishihara, Munetake. "Low-temperature supersonic flow control using repetitively pulsed MHD force." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1164748794.

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7

Baluti, Silviu Ioan. "Experimental characterization of flow dynamics of pulsed-chemical vapour deposition." Thesis, University of Canterbury. Mechanical Engineering, 2005. http://hdl.handle.net/10092/6593.

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This research is a study of the precursor mass transport, the first variable that affects the film deposition rate, uniformity, coverage, and microstructure of resulted films on substrates inside Chemical Vapour Deposition (CVD) reactors. The Pulsed-CVD reactant flow field uniformities in pulse flow were compared to equivalent steady flow regimes. For mass limited transport CVD processes this represents an important matter, as precursor flux increase leads directly to increased deposition rates. The objective of the research was to develop design relations and define operational parameter rang
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8

Xu, Ling An. "Pulsed ultrasound cross correlation flowmeter for two component flow measurement." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277230.

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9

Rattray, P. "Pulsed flow and time-resolved dielectric spectroscopy of electrorheological fluids." Thesis, Cranfield University, 1994. http://dspace.lib.cranfield.ac.uk/handle/1826/10508.

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Research has been undertaken into the dielectric and rheological properties of electrorheological (ER) fluids. The fluids studied were based on acene-quinone radical polymers made within the department dispersed in silicone oil. A commercial poly(1ithium methacrylate) dispersion was also examined. As a means of probing the underlying mechanisms of the E phenomenon, the permittivity of the fluids was measured from 12 Hz to 100 kHz under both static and dynamic conditions. Results indicated that a interfacial polarization process was taking place. A series of visual observations were made of flu
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10

Fernelius, Mark H. "Effect of Full-Annular Pressure Pulses on Axial Turbine Performance." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3825.

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Pulse detonation engines show potential to increase the efficiency of conventional gas turbine engines if used in place of the steady combustor. However, since the interaction of pressure pulses with the turbine is not yet well understood, a rig was built to compare steady flow with pulsing flow. Compressed air is used in place of combustion gases and pressure pulses are created by rotating a ball valve with a motor. This work accomplishes two main objectives that are different from previous research in this area. First, steady flow through an axial turbine is compared with full annular pulsed
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