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oai:www.ideals.illinois.edu:2142/83943 2023-07-11 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Chia-Fon F. Lee Cheng, Way Lee 2015-09-25T21:12:48Z 2015-09-25T21:12:48Z 10000-01-01 2010 2010 The study shows that the evaporation of the fuel affects the ignition behavior and combustion quality. Therefore, a thorough understanding of the evaporation and mixing processes is essential for further improvement in engine performance. A multi-component droplet evaporation model, as efficient as a traditional zero-dimensional model, yet preserving the correct description of the underlying physical process is developed in this study. The continuous thermodynamics formulation is used, for which the fuel (or liquid mixture) is described using a probability distribution function. The variation of composition in both liquid and vapor phases is represented by tracing the changes of the probability distribution function parameters. In the present study, the gamma distribution is used to represent the fuel fractions, and, the composition is tracked by tracing the mean and standard deviation of the distribution function. Finite diffusion, internal circulation, surface regression and high pressure effects are all accounted for. The model is shown to reproduce in a satisfactorily manner, experimental measurements adopted from the literature. The model is applied to predict the evaporation of single component (distribution) and multi-component droplets. The results show that the proposed model predicts the important distillation characteristics of practical fuel, which cannot be reproduced by a single component model. Made available in DSpace on 2015-09-25T21:12:48Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3455700.pdf: 13995696 bytes, checksum: de10bece92305f0b91b43445982f4632 (MD5) Previous issue date: 2010 Embargo set by: Seth Robbins for item 85224 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 277 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2010. http://hdl.handle.net/2142/83943 (MiAaPQ)AAI3455700 eng Engineering, Mechanical A Numerical Study of the Multi-Component Effects on the Combustion and Evaporation of Biofuels and Blends text Mechanical Engineering Mechanical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.