Dual Luminescence Imaging


Figure. Basic assumptions of dual luminescence imaging


Figure. Procedure of extracting temperature information of droplet impact.

Application Examples

Dual luminescence imaging is able to capture time-resolved and spatially resolved temperature information of supercooled droplet icing.

Movie. Temperature distribution of freezing droplet. (a) release of supercooling

Movie. Temperature distribution of freezing droplet. (b) droplet impacting

Scientific question arises from heat transfer of the droplet on impacting on a surface. Because latent heat (heat creation) and heat absorption occur during the icing process, it is not known how these heat transfer occurs in time and spatial scales.

Movie. Temperature distribution of impact surface of freezing droplet

Key Person

Currently this topic is done by Joe, Masafumi and Tatsunori.

Related Publications

  1. Hirai, Y., Mallette, A., Nishio, Y., Patterson, W. C., Hasegawa, Y., Sakaue, H., “Visualization of icing of supercooled water using Tb(III)-based temperature-sensitive paint,” Sensors and Actuators A: Physical, doi: 10.1016/j.sna.2018.11.051, Vol.285, pp. 599 – 602, 2019.
  2. Sakaue, H., Morita, K., Kimura, S., “Dual-luminescence imaging for capturing time-resolved temperature distributions of two-phase flow,” Journal of Multiphase Flow, doi:10.1016/ j.ijmultiphaseflow.2016.06.002, 2016.
  3. Patterson, W. C., Gonzales, J. P., Sakaue, H., “Global Temperature Mapping and Crystallization Analysis of a Supercooled Water Droplet Impact Icing using Luminescent Imaging Technique,” SAE 2019 International Conference on Icing of Aircraft, Engines, and Structures, June 17 – 21, Minneapolis, 2019.
  4. Patterson, W. C,, Nishio, Y., Gonzales, J. P., Mallette, A., Hirai, Y., Sakaue, H., “Surface Temperature Mapping Using Luminescent Imaging for Super-Cooled Large Droplet Impact,” the AIAA Aviation and Aeronautics Forum and Exposition, AIAA paper 2018-3186, 2018.