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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 141 to 150 of 3783 (0.068 seconds)| 141 |
The hydrodynamics of circulating fluidized bedsHarris, Benjamin James January 1992 (has links)
No description available.
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| 142 |
Flow visualisation in an engine cylinderDavies, Martin Clement January 1989 (has links)
No description available.
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| 143 |
Modelling and simulation of particle formation in laminar flamesChong, Kin Hung January 1994 (has links)
No description available.
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| 144 |
Theoretical studies of unsteady pre-mixed flamesMcIntosh, A. C. January 1981 (has links)
No description available.
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| 145 |
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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| 146 |
Measurement of mass fraction burnt and turbulent burning velocity in a four cylinder spark ignition engine fuelled with simulated biogasWhiston, Philip John January 1991 (has links)
No description available.
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| 147 |
Time-resolved measurement of freely propagating turbulent flamesMcCann, Heather Alison January 1998 (has links)
No description available.
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| 148 |
Combustion characteristics of Kerosene flames in gas turbine and ductsPerez Ortiz, Rebeca Margarita January 1998 (has links)
No description available.
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| 149 |
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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| 150 |
The pulsed electric discharge as an acoustic probe for combustion chamber diagnosticsMacquisten, M. A. January 1986 (has links)
No description available.
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