Atomization and vaporization for flash-boiling multi-hole sprays with alcohol fuels

► This study used Mie-scattering and quantitative Laser Induced Exciplex Fluorescence techniques to investigate flash-boiling spray. ► The structure and vapor quantity of flash-boiling spray primarily depend on the ambient-to-saturation pressure ratio. ► The observed trends of spray structure and vapor quantity have strong inter-dependence. ► It provides correlations of spray penetration and plume width.