TY - JOUR
T1 - Collaborative investigation of the internal flow and near-nozzle flow of an eight-hole gasoline injector (Engine Combustion Network Spray G)
AU - Mohapatra, Chinmoy K
AU - Schmidt, David P
AU - Sforozo, Brandon A
AU - Matusik, Katarzyna E
AU - Yue, Zongyu
AU - Powell, Christopher F
AU - Som, Sibendu
AU - Mohan, Balaji
AU - Im, Hong G.
AU - Badra, Jihad
AU - Bode, Mathis
AU - Pitsch, Heinz
AU - Papoulias, Dimitrios
AU - Neroorkar, Kshitij
AU - Muzaferija, Samir
AU - Martí-Aldaraví, Pedro
AU - Martínez, María
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2020/6/11
Y1 - 2020/6/11
N2 - The internal details of fuel injectors have a profound impact on the emissions from gasoline direct injection engines. However, the impact of injector design features is not currently understood, due to the difficulty in observing and modeling internal injector flows. Gasoline direct injection flows involve moving geometry, flash boiling, and high levels of turbulent two-phase mixing. In order to better simulate these injectors, five different modeling approaches have been employed to study the engine combustion network Spray G injector. These simulation results have been compared to experimental measurements obtained, among other techniques, with X-ray diagnostics, allowing the predictions to be evaluated and critiqued. The ability of the models to predict mass flow rate through the injector is confirmed, but other features of the predictions vary in their accuracy. The prediction of plume width and fuel mass distribution varies widely, with volume-of-fluid tending to overly concentrate the fuel. All the simulations, however, seem to struggle with predicting fuel dispersion and by inference, jet velocity. This shortcoming of the predictions suggests a need to improve Eulerian modeling of dense fuel jets.
AB - The internal details of fuel injectors have a profound impact on the emissions from gasoline direct injection engines. However, the impact of injector design features is not currently understood, due to the difficulty in observing and modeling internal injector flows. Gasoline direct injection flows involve moving geometry, flash boiling, and high levels of turbulent two-phase mixing. In order to better simulate these injectors, five different modeling approaches have been employed to study the engine combustion network Spray G injector. These simulation results have been compared to experimental measurements obtained, among other techniques, with X-ray diagnostics, allowing the predictions to be evaluated and critiqued. The ability of the models to predict mass flow rate through the injector is confirmed, but other features of the predictions vary in their accuracy. The prediction of plume width and fuel mass distribution varies widely, with volume-of-fluid tending to overly concentrate the fuel. All the simulations, however, seem to struggle with predicting fuel dispersion and by inference, jet velocity. This shortcoming of the predictions suggests a need to improve Eulerian modeling of dense fuel jets.
UR - http://hdl.handle.net/10754/663621
UR - http://journals.sagepub.com/doi/10.1177/1468087420918449
UR - http://www.scopus.com/inward/record.url?scp=85086339081&partnerID=8YFLogxK
U2 - 10.1177/1468087420918449
DO - 10.1177/1468087420918449
M3 - Article
SN - 1468-0874
SP - 146808742091844
JO - International Journal of Engine Research
JF - International Journal of Engine Research
ER -