Commissioning of high speed imaging system for rainbow schlieren measurements of vaporizing liquid fuel sprays

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dc.contributor Agrawal, Ajay K.
dc.contributor Volkov, Alexey N.
dc.contributor Cheng, Chih-Hsiung
dc.contributor.advisor Bittle, Joshua A. Mirynowski, Eileen Marie 2017-07-28T14:12:11Z 2017-07-28T14:12:11Z 2016
dc.identifier.other u0015_0000001_0002616
dc.identifier.other Mirynowski_alatus_0004M_12889
dc.description Electronic Thesis or Dissertation
dc.description.abstract The fuel injection process has been studied since the internal combustion engine was developed. Direct injection has been an integral part to the success of diesel engines, where there is minimal time for the fuel to mix with the compressed air. The benefits of fuel injection center on: fuel efficiency and lower toxic emissions. As the world depletes more fossil fuels each year it is imperative to concentrate research on techniques to lower fuel consumption. Past research on fuel sprays using laser techniques were limited by cross sensitivity in regards to the regions with both liquid and vapor phases present. Quantitative schlieren techniques have been proposed and investigated since the first half of the 20th century, but only recently with the rapid development of digital imaging techniques and computers have they have been used for quantitative analysis. This thesis presents the results for a new hardware installation for a rainbow schlieren diagnostic method. Experiments were performed using a constant pressure flow vessel (CPFV) and a modern common rail diesel injector to obtain high-speed images of the vaporizing fuel sprays. The CPFV ran under steady ambient thermodynamic conditions where the pressure and temperatures were controlled variables. Two cameras were used, Mie scatter liquid phase data and the rainbow schlieren vapor phase data were captured simultaneously. Quantitative results indicate that the axial and radial variation in the fuel sprays seem to match the well-validated variable profile model.
dc.format.extent 68 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Mechanical engineering
dc.title Commissioning of high speed imaging system for rainbow schlieren measurements of vaporizing liquid fuel sprays
dc.type thesis
dc.type text University of Alabama. Dept. of Mechanical Engineering Mechanical Engineering The University of Alabama master's M.S.

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