Droplet Impact on a Heated Stainless Steel Surface: Influence of Camera Framing Rate
Samuel L. Manzello
The impact of a single water droplet upon a polished stainless steel surface was imaged using a Digital High Speed Camera at 500, 1000, and 15,000 frames per second with shutter speed set to 50 s. The camera was fitted with a 60 mm micro lens to obtain the required spatial resolution to capture droplet impingement. The camera was aligned at an angle n n n a with respect to the horizontal. Surface heating was accomplished using a copper block with two miniature cartridge heaters embedded within it. The surface temperature was controlled within b 1 aC using a temperature controller. The surface temperature and impact Weber number (We = DV2/ z nwhere D is droplet diameter, V is impact velocity z n is density, is surface tension w were fixed for each framing rate at Ts = 345 XC and We = 165, respectively. At 15,000 frames per second, jetting was observed during breakup of the liquid film.
Droplet Impact on a Heated Stainless Steel Surface: Influence of Camera Framing Rate, Journal of Heat Transfer-Transactions of the ASME, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=861296
(Accessed December 2, 2023)