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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

The effects of diffusers and aspect ratio on air flow in fan plenums

Yeh, Wen-Shu 08 1900 (has links)
No description available.
22

Internal architecture, facies distribution and reservoir modelling of the Cingöz deepwater clastic system in southern Turkey

Satur, Nicholas January 1999 (has links)
Recent discoveries of hydrocarbons within reservoirs deposited within ancient deepwater clastic systems has necessitate further studies into this sedimentary environment. The aim of such studies is to gather information about the internal heterogeneities within submarine fans. This Ph.D. study focuses on such heterogeneities within an exposed, Miocene aged, sand-rich deep-marine system, the Cingöz Formation deposited within the Adana Basin in southern Turkey. A quantitative and qualitative sedimentological study into geometry, spatial and temporal variations in internal architecture and facies distributions has been undertaken. The study area is divided into two regions, the eastern and western areas of the Cingöz Fan, previously interpreted as representing two coeval and separated submarine fans, but interpreted as a single deepwater clastic system within this study. The eastern areas are sourced from at least four feeder channels. Channels display multiple phases of infilling, facies that indicate deposition from fan deltas that pass upward into deep water turbidities. Variations in the internal architecture and channel-floor gradient within a seven km depositional-dip section of one of these channels indicates changes in hydraulic conditions with complex inter-relationship between turbulence, erosion, gradient and confinement of the turbidity currents. The western areas display landward to basinward facies changes from fluvial, alluvial fan, fan delta and deep-marine fan environments. This area of the submarine fan is sourced via a single, 4 km wide and 9 km long, topographically controlled fairway. This conduit displays multiple phases of infilling on a variety of scales, indicating pulses of sediment supply. Sediment is deposited basinwards of the fairway, initially in elongate, 0.3-1 km wide and at least 15 km long, tongue-shaped bodies that are both vertically and offset stacked and separated by packages of siltstone.
23

Power reduction of mine ventilation fans /

Beswick, Michael Unknown Date (has links)
Thesis (MEng)--University of South Australia, 1998
24

Power reduction of mine ventilation fans /

Beswick, Michael Unknown Date (has links)
Thesis (MEng)--University of South Australia, 1998
25

Delineating debris-flow hazards on alluvial fans in the Coromandel and Kaimai regions, New Zealand, using GIS : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Environmental Science at the University of Canterbury /

Welsh, Andrew J. January 2007 (has links)
Thesis (M. Sc.)--University of Canterbury, 2007. / Typescript (photocopy). Includes bibliographical references (leaves 150-169). Also available via the World Wide Web.
26

Axial-flow fan noise : with particular reference to the noise caused by vortex formation at the trailing edge and upper surface of blades.

Gower, Stephen Newman. January 1966 (has links) (PDF)
Thesis (M.E.) -- University of Adelaide, Dept. of Mechanical Engineering, 1968.
27

The correlation of randomness with high tip losses in an axial flow fan stage /

Alday, John Hane, January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 119-121). Also available via the Internet.
28

Examining the team identification of football fans at the high school level /

Reding, Frank Nicholas. January 2009 (has links)
Thesis (M.A.)--Western Kentucky University, 2009. / Includes bibliographical references (leaves 34-43 ).
29

Structure of the Upper Monterey Submarine Fan Valley

Hamlin, James Sherrill. January 1974 (has links)
Thesis (M.S.)--Naval Postgraduate School, 1974. / Includes bibliographical references (leaves 38-39).
30

A RANDOM-WALK SIMULATION MODEL OF ALLUVIAL-FAN DEPOSITION

Price, Williams Evans, Jr. 06 1900 (has links)
A digital model based on a random walk was used in an experiment to determine how well such a model is able to simulate alluvial - fan deposition. The model is in three dimensions and is dynamic with respect to both time and space. Two principal stochastic events were employed, (1) a relative uplift of the mountain area that is the source of the fan sediments, and (2) a storm event of sufficient magnitude to result in the deposition of material on the fan. These two events are assumed to follow independent Poisson processes with exponentially distributed interoccurrence times. The pattern of deposition is determined by a random walk from the canyon mouth at the mountain front, and each depositional event is assumed to occur instantaneously. The direction that each step in the walk takes is determined probabilistically by the gradient in the direction of flow, the momentum of flow, and the boundary conditions stipulated in the model. The type of flow, whether a depositing debris or water flow, or eroding water flow, depends upon the thickness of erodible material in the source basin. Deposition is assumed to occur over the entire route of flow either as a bed tapered in the direction of flow or as a bed of uniform thickness. The particle -size distribution of the water -flow deposits is governed by the slope in the direction of flow. Erosion is considered negative deposition and results from the exponential decline in elevation of the main stream channel at the fan apex during periods of no uplift, or from water flows containing little basin sediment. Results from the computer runs were printed as geologic maps of the fan surface, and geologic sections through the deposits; these indicate that, at least qualitatively, a random -walk model provides a reasonable basis for simulating alluvial -fan deposition.

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