TY - JOUR
T1 - Study of spray structure from non-flash to flash boiling conditions with space-time tomography
AU - Du, Jianguo
AU - Zang, Guangming
AU - Mohan, Balaji
AU - Idoughi, Ramzi
AU - Sim, Jaeheon
AU - Fang, Tiegang
AU - Wonka, Peter
AU - Heidrich, Wolfgang
AU - Roberts, William L.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was sponsored by Saudi Aramco under the FUELCOM II program, CCRC and VCC Center Competitive Funding, and Competitive Research Grants from KAUST.
PY - 2020/8/18
Y1 - 2020/8/18
N2 - Flash boiling and plume interaction are common phenomena occurring in gasoline direct injection (GDI) spray at throttling and low load engine conditions. Combined with optical engines and low-pressure vessels, several optical techniques, such as backlight imaging, Mie-scattering, and laser sheet imaging have been employed to study the flash boiling morphology. However, in the 2D images resulting from these techniques (projection views or planar imaging), the 3D information is lost. Those methods are then incapable of providing satisfactory information, especially for the study of multi-plume interaction in flash boiling spray, since multi-plume interaction is not a 2D event. This paper reports the implementation of a 4D tomographic reconstruction method from multi-view diffused back illumination (DBI) images, used for the first time in spray characterization. This cost-effective and time-saving method with a simple experimental setup clarifies the 3D spray structure and fuel trajectory change from non-flashing conditions to flare flash conditions, and quantifies the 3D characteristics of individual plumes in non-flash conditions.
AB - Flash boiling and plume interaction are common phenomena occurring in gasoline direct injection (GDI) spray at throttling and low load engine conditions. Combined with optical engines and low-pressure vessels, several optical techniques, such as backlight imaging, Mie-scattering, and laser sheet imaging have been employed to study the flash boiling morphology. However, in the 2D images resulting from these techniques (projection views or planar imaging), the 3D information is lost. Those methods are then incapable of providing satisfactory information, especially for the study of multi-plume interaction in flash boiling spray, since multi-plume interaction is not a 2D event. This paper reports the implementation of a 4D tomographic reconstruction method from multi-view diffused back illumination (DBI) images, used for the first time in spray characterization. This cost-effective and time-saving method with a simple experimental setup clarifies the 3D spray structure and fuel trajectory change from non-flashing conditions to flare flash conditions, and quantifies the 3D characteristics of individual plumes in non-flash conditions.
UR - http://hdl.handle.net/10754/664662
UR - https://linkinghub.elsevier.com/retrieve/pii/S1540748920302601
U2 - 10.1016/j.proci.2020.06.171
DO - 10.1016/j.proci.2020.06.171
M3 - Article
SN - 1540-7489
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
ER -