ISSN Online: 2688-7231
ISBN Online: 978-1-56700-524-0
Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
Experimental investigation of Urea-water solution (UWS) spray impingement on a heated flat surface
摘要
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.