Date of Award
Mechanical, Automotive, and Materials Engineering
Combustion chamber, Spray characteristics, Schlieren imaging, Shadowgraph imaging system, Diesel
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The primary objective of this thesis is to improve optical setups of a constant volume combustion chamber to better understand the vaporization and spray characteristics of various fuels. The schlieren imaging technique is utilized to visualize phenomena that are challenging to observe directly. In this thesis, the schlieren imaging is used to observe the spray and ignition characteristics of DME and diesel fuels under high injection pressure.
First, various optical techniques are discussed and compared under the same test condition including schlieren, shadowgraph, and direct imaging. The advantages for these techniques are presented and the most appropriate technique for different testing scenarios is proposed.
Second, the spray and ignition characteristics of DME and diesel are compared. The inert spray for both fuels are observed and compared using schlieren imaging technique. The reactive spray for both fuels are observed and compared using direct imaging and shadowgraph imaging system.
Cong, Binghao, "Experimental Improvements to a Constant Volume Combustion Chamber for Fuel Spray and Ignition Studies" (2023). Electronic Theses and Dissertations. 9082.