Publications Details

Experiments Simulations and Diagnostics for Spatial and Temporal Resolution of Liquid Atomization

Guildenbecher, Daniel R.; Mazumdar, Yi C.; Wagner, Justin W.; Reichardt, Thomas A.; Arienti, Marco A.; Hoffmeister, Kathryn N.

Progress toward quantitative measurements and simulations of 3D, temporally resolved aerodynamic induced liquid atomization is reported. Columns of water and galinstan (liquid metal at room temperature) are subjected to a step change in relative gas velocity within a shock tube. Breakup morphologies are shown to closely resemble previous observations of spherical drops. The 3D position, size, and velocity of secondary fragments are quantified by a high-speed digital inline holography (DIH) system developed for this measurement campaign. For the first time, breakup dynamics are temporally resolved at 100 kHz close to the atomization zone where secondary drops are highly non-spherical. Experimental results are compared to interface capturing simulations using a combined level set moment of fluid approach (CLSMOF). Initial simulation results show good agreement with observed breakup morphologies and rates of deformation.