Crude oil is accidentally released into open water each year. Since the released oil is harmful to the environment, the trajectory needs to be predicted in order to remove the oil minimizing the polluted area by oil. The prediction of the spilled oil trajectory becomes complicated when the ice is present like in Arctic Ocean. When the oil is adjacent to ice, the oil causes the ice melting. In order to simulate this ice melting, the heat transfer between oil and ice needs to be understood. Spatial- and time-resolved temperature and velocity change in oil are required. Several optical measurement techniques can provide spatial- and time-resolved information in fluids, however, none of those techniques are available to measure the temperature and velocity distribution in oil simultaneously. In this research, the simultaneous thermometry and velocimetry in oil is accomplished by combining Dual Luminescence Imaging (DLI) for thermometry and Particle Image Velocimetry (PIV). Pyranine-induced particles are used for PIV. By selecting proper luminophores for DLI, temperature and velocity distributions in oil can be captured by a color camera in the developed method. With this technique, the ice melting is studied and will be discussed in the presentation.
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Dual-luminescence Imaging and Particle Imaging Velocimetry for Simultaneous Temperature and Velocity Field Measurements in Immiscible Liquid
Arctic oil spills are particularly detrimental as they cause extensive ice melting in
addition to the environmental pollution they create. However, few studies have been
undertaken to reveal how oil-ice interactions impact ice melting. A simultaneous
measurement method is developed to investigate the heat transfer pathways from oil
slicks to ice. Functional luminescent probes are dissolved in a liquid immiscible with
water, which imitates spilled oil. Another luminescent probe is added to seeding
particles in order to increase their luminescent intensity. Dual-luminescence imaging
and particle imaging velocimetry (PIV) are combined into a single simultaneous
measurement method. The developed measurement system shows simultaneous
temperature and velocity measurements for natural convection of the immiscible liquid.
Successful implementation of the two measurement techniques together is a step
toward analyzing heat transfer pathways in a spilled oil adjacent to an ice body, which
indicates the extent of melting.
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- Award ID(s):
- 1938976
- NSF-PAR ID:
- 10303813
- Date Published:
- Journal Name:
- Measurement
- ISSN:
- 0263-2241
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Abstract Arctic oil spills are particularly detrimental as they could cause extensive ice melting in addition to the environmental pollution they create. Floating oil slicks amongst ice floes absorb ambient energy and transfer that energy to the ice to aggravate melting in the thaw season. However, few studies have been undertaken to reveal how oil-ice interactions impact ice melting. This research employs a measurement technique to investigate the heat transfer pathways from oil slicks to the ice. Dual-luminescence imaging and particle imaging velocimetry (PIV) in a side cooled cavity is performed for temperature and velocity measurements of Toluene, respectively. Dual-luminescence imaging captured the spatial temperature distribution of the fuel. Consecutive imaging of the seeding particles in PIV provided the spatial velocity field of the fuel in the cavity. The results show that the convective field is directly coupled with the temperature field, i.e., the temperature difference instigates a flow in the liquid. Successful implementation of the two measuring techniques together is a step toward analyzing heat transfer pathways in a liquid fuel adjacent to an ice body, indicating the extent of melting.
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Accepted Manuscript1.0
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