Development and Testing of Temperature-sensitive Beads for Simultaneous Thermometry and Velocimetry

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Development and Testing of Temperature-sensitive Beads for Simultaneous Thermometry and Velocimetry

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dc.contributor.advisor Dabiri, Dana en_US
dc.contributor.author West, Trenton Joshua en_US
dc.date.accessioned 2012-08-10T20:36:57Z
dc.date.available 2012-08-10T20:36:57Z
dc.date.issued 2012-08-10
dc.date.submitted 2012 en_US
dc.identifier.other West_washington_0250O_10057.pdf en_US
dc.identifier.uri http://hdl.handle.net/1773/20282
dc.description Thesis (Master's)--University of Washington, 2012 en_US
dc.description.abstract Temperature-sensitive beads (TSBs) have been developed with promising characteristics for application to complex flows, giving the capability for flow visualization via simultaneous full-field thermometry and velocimetry. The buoyant plume resulting from natural convection was selected as the flow for preliminary testing. Of the various TSBs fabricated and tested, the best results were achieved with 5 µm-diameter polystyrene microspheres doped with Europium (III) thenoyltrifluoroacetonate (EuTTA) and Coumarin. The dual-dye sensors rely on the temperature-sensitive luminescence of EuTTA for thermometry, while the temperature-insensitive Coumarin serves as a reference dye, allowing for correction of non-uniformities in lighting and particle size/shape. The TSBs are shown to meet particle size, particle response time, particle density, and temperature sensitivity requirements for natural convection in water. Moreover, the characteristics of the TSBs are suitable for a variety of turbulent water flows. A thermal response time has yet to be measured for the TSBs, but an appropriate technique for performing this measurement is in development. en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.subject Microbead; Sensitive; Simultaneous; Temperature; Thermometry; Velocimetry en_US
dc.subject.other Aerospace engineering en_US
dc.subject.other Mechanical engineering en_US
dc.subject.other Engineering en_US
dc.subject.other Aeronautics and astronautics en_US
dc.title Development and Testing of Temperature-sensitive Beads for Simultaneous Thermometry and Velocimetry en_US
dc.type Thesis en_US
dc.embargo.terms No embargo en_US


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