Anand Kumar
Department of Mechanical Engineering, IIT Madras, Madras-600036, India
Anandteerth Muddapur
Department of Mechanical Engineering, IIT Madras, Chennai-600036, India
Srikrishna Sahu
Department of Mechanical Engineering, Indian Institute of Technology Madras,
Chennai 600036, India
The present study experimentally investigates the
outcome of Urea-water solution (UWS) spray impingement
on a heated surface which is relevant to a NOx reduction strategy in diesel engines based on the Selective catalytic reduction (SCR) technology. High-speed pulse-shadowgraph technique was employed to capture the unsteady spray-wall impingement process, while the time-varying droplet size and velocity was measured using the Interferometric Laser
Induced Droplet Sizing (ILIDS) technique. Based on the
spray visualisation and droplet sizing measurements, a
regime map is proposed by using suitable non-dimensional
parameters for a wide range of surface temperature of the wall.