On the spreading of high-pressure spray-generated liquid wall films

• Experiments of the spreading a liquid film generated by high pressurized spray impacting wall. The pressure, distance to wall, time injection and temperature are varied. radius follows t 1 / 2 evolution during spreading. results from balance between radial pressure gradient viscous friction inside film. Once is shut down, relaxation observed due dissipation momentum n-decane induced impingement high-pressure injector studied experimentally. experimental setup uses Refractive Index Matching (RIM) method observe development propagation wall influence time, temperature, considered. on presents two clear distinct phases. During phase area growing linearly with respect time. stopped, relaxes its maximal expansion. Each accurately described using simple modeling based mass in