Caltech Authors
(24.239 recursos)
Repository of works by Caltech published authors.
Mostrando recursos 1 - 3 de 3
1.
Chemical and statistical soot modeling - Blanquart, Guillaume
The combustion of petroleum based fuels like kerosene, gasoline, or diesel leads to the formation of several kind of pollutants. Among them, soot particles are particularly bad for their severe consequences on human health. Over the past decades, strict regulations have been placed on car and aircraft engines in order to limit these particulate matter emissions. Designing low emission engines requires the use of predictive soot models which can be applied to the combustion of real fuels.
Towards this goal, the present work addresses the formation of soot particles both from a chemical and statistical point of view. As a...
(application/pdf) - 10-oct-2009
2.
Noise Reduction and Flow Characteristics in Asymmetric Dual-Stream Jets - Shupe, Rebecca S.
This research effort is motivated by the advent of asymmetric nozzle concepts for
directional suppression of jet noise from turbofan engines. The specific method addressed
is the fan flow deflection (FFD) technique, whereby aerodynamic devices deflect
downward the fan stream of the turbofan exhaust and thus create an asymmetry in the
plume of the jet exiting an otherwise coaxial nozzle. The asymmetry reduces jet noise
emissions in downward and sideward directions affecting airport communities. Flow field
and acoustic measurements were conducted to understand what flow quantities are
affected by the departure from symmetry and how their changes impact noise emission.
The experiments were complemented by computations that included...
(application/pdf) - 17-nov-2009
3.
Three essays in empirical industrial organization - Shum, Matthew
This thesis consists of three empirical essays on topics in industrial organization. Chapter 1 introduces the three essays and describes their main results. In chapter 2, I measure the effects of advertising on households' choices among competing brands of differentiated products when households are habit persistent. In markets characterized by habit persistent consumers, an important role for advertising may be to encourage consumers to "switch" to newer, less familiar brands. This potentially enhances competition between competing brands by reducing household-level differentiation between brands that a household is and is not experienced with, contrary to the traditional Bainian arguments that advertising...
(application/pdf) - 28-oct-2008
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