Prof Mahesh Tirumkudulu's Talk

Aug 02, 2018 - 17:00

Aug 02, 2018 - 18:00

Room No. 118 ground floor Chemical Engg. Dept.

Seminars

Prof Mahesh Tirumkudulu IITB

Abstract: The process of atomization often involves ejecting thin liquid sheets at high speeds from a nozzle that causes the sheet to flap violently and break-up into fine droplets. The flapping of the liquid sheet has been attributed for more than 70 years to sheet’s interaction with the surrounding gas phase. We present theory and experimental evidence to the contrary and show that the flapping is caused by the thinning of the liquid sheet as it spreads out from the nozzle exit. The measured growth rates of the waves agree remarkably well with the predictions of the theory that accounts for sheet’s thinning but ignores aerodynamic interactions. We anticipate these results to not only lead to more accurate predictions of the final drop-size distribution but also lead to more efficient designs of atomizers.Bio: Mahesh S Tirumkudulu is a Professor in the Department of Chemical Engineering in Indian Institute of Technology Bombay in Mumbai. He obtained his Bachelor's in Technology degree from IIT Madras in 1995 and PhD from City University of New York in 2001. He joined IIT Bombay in 2003 after a post-doctoral stint at Princeton University. He was a Visiting Fellow Commoner at Trinity College Cambridge University from Jan-June 2017. Prof Tirumkudulu works in the area of fluid mechanics and colloids & interfaces with a focus on research problems related to drying colloidal films atomization with applications to combustion and sprays and fluid mechanics of bacterial locomotion. This seminar is compulsory for students registered for course CL 702 or CL 704.