Title:
Visualization of nucleation of supercritical carbon dioxide flow through a nozzle

dc.contributor.advisor Ranjan, Devesh
dc.contributor.author Lim, Chang Hyeon
dc.contributor.committeeMember Loutzenhiser, Peter
dc.contributor.committeeMember Sun, Wenting
dc.contributor.department Mechanical Engineering
dc.date.accessioned 2019-05-29T14:04:24Z
dc.date.available 2019-05-29T14:04:24Z
dc.date.created 2019-05
dc.date.issued 2019-04-25
dc.date.submitted May 2019
dc.date.updated 2019-05-29T14:04:24Z
dc.description.abstract Interest in fundamental properties of carbon dioxide near the critical point led to an investigation of supercritical CO2 flow through a converging-diverging nozzle. To study a phase change and flow behavior of supercritical CO2 flow, a closed-loop carbon dioxide loop is built with optically accessible test section. Unlike studies in which most of the experiment were performed in a blowdown facility, a steady-state closed carbon dioxide loop is built to visually inspect a nucleation behavior near the critical point. In addition, a high-speed optical diagnostic is performed on the test section to interpret the nucleation behavior in the order of microsecond. Three different parameters (pressure, temperature, and flow rate) for the supercritical flow is controlled with a specific converging-diverging nozzle geometry. Theoretical flow calculation using homogeneous equilibrium model is computed to compared with the experiment flow properties. With the high-speed diagnostics, the specific geometry yields a dominant shedding frequency that governs the flow behavior near the critical point.
dc.description.degree M.S.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/61291
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Supercritical CO2
dc.subject High speed optical diagnostics
dc.subject Two-phase flow
dc.title Visualization of nucleation of supercritical carbon dioxide flow through a nozzle
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Ranjan, Devesh
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 8e81e5e6-cdc0-43be-a738-28347a2d4736
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Masters
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