Clemente Mallada R, Fajri H, Rieß S, Strauß L, Wensing M (2024)
Publication Type: Conference contribution, Conference Contribution
Publication year: 2024
Event location: Shanghai
This experimental work visualizes the mixture preparation, ignition, and combustion of
methanol (MeOH) and n-dodecane sprays colliding at an angle of 0.42 radians at an ambient
temperature of 873K and density of 23.4 kg/m³. High-speed Schlieren imaging experiments
are conducted in an inert atmosphere to study the resulting mixture formation from the collision
of the two vapor jets. Schlieren and OH* high-speed imaging of the flames allow for the
investigation of ignition delay (ID) and heat release ratio (HRR). High-speed imaging of the
natural luminosity of the flames allows for the comparison of soot production.
Three distinct injection strategies are investigated: (1) injecting MeOH into a flame of
the pilot fuel (PF), (2) timing both injections to reach the intersection point simultaneously, and
(3) injecting the PF into an already stratified methanol plume. To study the influence of the
substitution ratio, MeOH electronic injection duration is varied from 550 μs to 3000 μs, and
the PF duration is shortened from 270 μs to 190 μs. PF is injected at 80MPa and 160MPa to
study the influence of PF’s spray momentum compared to the MeOH spray injected at 35 MPa.
Results demonstrate the possibility of sustaining a MeOH flame. Cases where the PF
sprays ignite after colliding with the MeOH jet exhibit a reduction in soot production and a
prolonged ID
APA:
Clemente Mallada, R., Fajri, H., Rieß, S., Strauß, L., & Wensing, M. (2024). Methanol – n-dodecane dual-fuel direct-injection combustion under compression ignition conditions in a constant flow chamber. In Proceedings of the ICLASS 2024 - 16th Triennial International Conference on Liquid Atomization and Spray Systems. Shanghai.
MLA:
Clemente Mallada, Rafael, et al. "Methanol – n-dodecane dual-fuel direct-injection combustion under compression ignition conditions in a constant flow chamber." Proceedings of the ICLASS 2024 - 16th Triennial International Conference on Liquid Atomization and Spray Systems, Shanghai 2024.
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