This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Global Temperature Mapping and Crystallization Analysis of Supercooled Water Droplet Freezing Using Luminescent Imaging Technique
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 10, 2019 by SAE International in United States
Annotation ability available
A prominent environmental phenomenon that greatly affects many industries including automotive, aeronautics, energy transmission, etc. is icing. One mechanism by which this occurs and plagues our machines and infrastructures that are exposed to the atmosphere is the icing of supercooled water droplets on a surface - either by impact against a surface or spontaneous nucleation and crystallization of a droplet at rest. The process by which nucleation propagates during the liquid-to-solid phase change and the thermodynamic implications in regards to latent heat generation and transfer are not fully understood on the single droplet scale. An attempt to better resolve these unknowns in both spatial and temporal domains has been made here. Previous efforts have implemented a unique temperature sensing technique utilizing luminescent dyes. A thermally sensitive luminescent paint coated onto the surface of interest allows direct mapping of the heat transfer from the supercooled liquid droplet undergoing freezing to the surface. This technique also provides insight into the nucleation propagation speed along the droplet-substrate interface. This, in conjunction with a high-speed color camera and an intense ultraviolet light source are used to accurately resolve the thermal energy within the freezing droplet in both space and time. Synchronization of the thermal data of the droplet with the measurements of transverse heat transfer through the impact surface allow an estimation of heat generation and loss to the environment - key factors in current modelling and simulation efforts used by researchers and industry to predict ice accretion and to better mitigate it.
|Technical Paper||Two-Way Flow Coupling in Ice Crystal Icing Simulation|
|Technical Paper||FENSAP-ICE: 3D Simulation, and Validation, of De-icing with Inter-cycle Ice Accretion|
|Technical Paper||Flow Field Predictions of the NASA Glenn Icing Research Tunnel|
CitationPatterson, W. and Sakaue, H., "Global Temperature Mapping and Crystallization Analysis of Supercooled Water Droplet Freezing Using Luminescent Imaging Technique," SAE Technical Paper 2019-01-2009, 2019, https://doi.org/10.4271/2019-01-2009.
- Heymsfield, A.J. and Miloshevich, L.M. , “Homogeneous Ice Nucleation and Supercooled Liquid Water in Orographic Wave Clouds,” Journal of the Atmospheric Sciences 50(15):2335-2353, 1993.
- Potapczuk, M.G. , “Aircraft Icing Research at NASA Glenn Research Center,” J. Aerosp. Eng. 26(2):260-276, 2013.
- NTSB , “American Eagle Flight 4184,” vol. 1, 1997.
- Sakaue, H., Morita, K., Kimura, S. , “Dual-Luminescence Imaging for Capturing Time-Resolved Temperature Distributions of Two-Phase Flow,” 2016, doi:10.1016/j.ijmultiphaseflow.2016.06.002.
- Iijima Y., Egami Y., Nishizawa A., Asai K. et al. , “Development of Temperature Sensitive Paint formulation for Large-Scale Cryogenic Wind Tunnels”, in International Congress on Instrumentation in Aerospace Simulation Facilities, Aug. 2003, 70-76.
- Tanaka, M., Morita, K., Kimura, S., and Sakaue, H. , “Time-Resolved Temperature Distribution of Icing Process of Supercooled Water in Microscopic Scale,” in 6th AIAA Atmospheric and Space Environments Conference, AIAA Paper 2014-2329, 2014.
- Lackowitz J. R. , Principles of Fluorescence Spectroscopy (New York, NY: Kluwer Academic/Plenum Publishers, 1999), Chapter 1.3.
- Liu, T. and Sullivan, J. , Pressure and Temperature Sensitive Paints (Berlin: Springer-Verlag, 2004).
- Ijima Y., Egami Y., Nishizawa A., and Asai K. , “Optimization of Temperature-Sensitive Paint Formulation for Large-Scale Cryogenic Wind Tunnels,” National Aerospace Laboratory.
- Morita, K. and Sakaue, H. , “Characterization Method of Hydrophobic Anti-Icing Coatings,” Review of Scientific Instruments 86(11), 2015.
- Patterson, W.C., Morita, K., and Sakaue, H. , “Time-Resolved Thermal Study of Accelerated Supercooled Droplet Impact,” in 9th AIAA Atmospheric and Space Environments Conference, AIAA AVIATION Forum, AIAA 2017-4482.