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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 11 to 20 of 602 (0.074 seconds)Spelling suggestions: "subject:"cognition"" "subject:"cpgnition""
| 11 |
Numerical experiments on mantle convectionHouseman, G. A. January 1981 (has links)
No description available.
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| 12 |
Modelling and simulation of turbulent two-phase flamesChang, Cherng-Shiang January 1994 (has links)
No description available.
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| 13 |
Turbulence-enhanced combustion of lean mixturesCheckel, M. D. January 1981 (has links)
No description available.
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| 14 |
Experimental studies of turbulent mixed flamesZhang, Yang January 1990 (has links)
No description available.
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| 15 |
Turbulent structure and decay in a model I.C. engineSelim, Mohamed Younes El-Saghir January 1992 (has links)
No description available.
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| 16 |
Theoretical studies of unsteady pre-mixed flamesMcIntosh, A. C. January 1981 (has links)
No description available.
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| 17 |
Influence of strain fields on flame propagationMendes-Lopes, J. M. C. January 1983 (has links)
Flame propagation can be highly influenced by the presence of strain fields. Two regimes of turbulent flame propagation can be identified: (a) a strain-dominated regime which occurs when the smallest eddies are larger than the laminar flame thickness; and (b) a mixing-dominated regime found when the smallest eddies are smaller than the laminar flame thickness. Therefore, flame propagation in a low to moderate intensity turbulent medium, and initial stages of flame growth from a point ignition source, may be dominated by straining effects. This is because in these cases it is very likely that the laminar flame thickness is smaller than the Kolmogorov length scale, which is a measure of the smallest structures of the turbulence. In this dissertation theoretical and experimental work is reported on the influence of a uniform strain field (together with heat loss) on laminar flame propagation. The theoretical results show that, in general, the laminar burning velocity decreases when the strain rate is increased. It is also shown that the Lewis number is a very important parameter in this phenomenon. The decrease in burning velocity is enhanced with increasing Lewis number. Heat loss is also shown to be important, with further decrease in burning velocity when the heat loss is increased. Experimental work is carried out on an axisymmetricstagnation point flow, in which a laminar flame is established. Different values of the strain rate are imposed on the flame. Also, different fuels and mixture strengths are used. The velocity and temperature fields are measured, allowing the strain rate and burning velocity to be quantified. Reasonable agreement is obtained between the theoretical and experimental results. The consequences of the results obtained are discussed for the general case of turbulent flame propagation, and for the particular case of cyclic variations in combustion in spark ignition engines. It is shown that variations in the turbulent strain rate from cycle to cycle can cause cyclic variations in combustion.
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| 18 |
Time-resolved measurement of freely propagating turbulent flamesMcCann, Heather Alison January 1998 (has links)
No description available.
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| 19 |
Combustion characteristics of Kerosene flames in gas turbine and ductsPerez Ortiz, Rebeca Margarita January 1998 (has links)
No description available.
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| 20 |
The investigation and stochastic modelling of cyclic cylinder pressure variation during combustion in spark-ignition enginesLandsborough, Keith J. January 2000 (has links)
No description available.
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