Imaging temperature and thickness of thin planar liquid water jets in vacuum.

ABSTRACT: We present spatially resolved measurements of the temperature of a flat liquid water microjet for varying ambient pressures, from vacuum to 100% relative humidity. The entire jet surface is probed in a single shot by a high-resolution infrared camera. Obtained 2D images are substantially influenced by the temperature of the apparatus on the opposite side of the infrared camera; a protocol to correct for the thermal background radiation is presented. In vacuum, we observe cooling rates due to water evaporation on the order of 10⁵ K/s. For our system, this corresponds to a temperature decrease in approximately 15 K between upstream and downstream positions of the flowing leaf. Making reasonable assumptions on the absorption of the thermal background radiation in the flatjet, we ca

SUBMITTER: Buttersack T 

PROVIDER: S-EPMC10314331 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature