The Digest’s 2025 Multi-Slide Guide to Alcohol Spray and Hydrogen Jet Experiments and Modeling

This project supports off-road engine decarbonization via methanol and hydrogen, emphasizing injection challenges. Methanol experiments reveal significant plume collapse and accelerated inter-plume regions under flash-boiling, with slow evaporation causing potential wall wetting. Hydrogen jet studies show complex shockwave structures and substantial local cooling. These findings highlight key difficulties for CFD modeling and injector optimization. The research provides critical datasets for Engine Combustion Network (ECN) injectors, aiming to improve fuel injection technologies for sustainable heavy-duty engines.