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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.
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Showing 481 to 490 of 2106 (0.011 seconds)| 481 |
Polymer modified oils in elastohydrodynamic lubricationDickinson, P. J. January 1982 (has links)
No description available.
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| 482 |
A revised two-equation model of turbulenceIlegbusi, J. O. January 1983 (has links)
No description available.
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| 483 |
Heuristic scheduling algorithms for dedicated and flexible manufacturing systemsChan, T. S. January 1986 (has links)
No description available.
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| 484 |
Experiments with steady and unsteady confined turbulent flowsKhezzar, Lyes January 1987 (has links)
No description available.
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| 485 |
Gaseous simulation of diesel-type spraysWong, Ka Yin January 1989 (has links)
No description available.
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| 486 |
Critical heat flux in non-circular channelsManning, Jonathan Paul January 2018 (has links)
In the design of nuclear reactors adequate cooling must be demonstrated for all operational states as well as during and after design basis accidents. A key aspect of this design activity is the prediction of the Critical Heat Flux (CHF). The focus of the work in this thesis was the prediction of CHF in non-circular channels. The Look Up Table was used to analyse several burnout studies for non-circular channels in the literature and was found to be a poor predictive tool for these geometries. A conventional phenomenological model developed for round tubes was also shown to give poor predictions, with a mean error of 25% and root mean square error of 31%. Phenomenological modelling requires correlations for the mass transfer processes in annular flow. Deposition rates for annular flow in rectangular channels have been determined by an analysis of upstream burnout data. This showed good agreement with the rates in round tubes and validated this aspect of the phenomenological approach. The conventional one-dimensional phenomenological model was extended to include a variation in film thickness around the periphery. This model was fitted to experimental data from the literature for burnout in asymmetrically heated tubes. The low mean and root mean square errors, 0.8% and 3.0% respectively, confirmed the principle of the model. A flow visualisation rig has been designed and successfully operated to produce a flow-regime map for a rectangular channel of 25 mm by 2.5 mm. This map showed that the gas momentum flux required to cause annular flow was higher than that in round tubes. A wide range of annular flow conditions were observed and shown to be generally consistent with the phenomenological modelling approach. However it was seen that there were novel flow features that will need to be accounted for when predicting CHF in these geometries.
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| 487 |
Fracture from flaws in polymersHashemi, S. January 1983 (has links)
No description available.
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| 488 |
Two scalar probability density function models for turbulent flamesAguirre-Saldivar, Rina Guadalupe January 1987 (has links)
No description available.
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| 489 |
Multiaxial creep of isotropic and anisotropic materialsRamteke, Ashok Lahanuji January 1987 (has links)
No description available.
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| 490 |
Creep-fatigue failure of engineering materials at elevated temperaturesNishida, Kenji January 1989 (has links)
No description available.
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