Thermal-Fluid-Structure Interaction Modeling of Outdoor Digital Displays

dc.contributor.advisor Joshi, Yogendra
dc.contributor.author Monge Jimenez, Luis Diego
dc.contributor.committeeMember Ghiaasiaan, Mostafa
dc.contributor.committeeMember Sitaraman, Suresh K.
dc.contributor.department Mechanical Engineering
dc.date.accessioned 2023-07-26T18:46:25Z
dc.date.available 2023-07-26T18:46:25Z
dc.date.created 2022-05
dc.date.issued 2022-04-28
dc.date.submitted May 2022
dc.date.updated 2023-07-26T18:46:26Z
dc.description.abstract Digital displays deployed in outdoor applications require robust cooling solutions capable of handling transient ambient temperatures and solar irradiances. One of the most important components in the outdoor displays is the liquid crystal display (LCD). This thesis studies two generations of 75” outdoor digital displays designed and produced by Manufacturing Resources International. The cooling configuration inside the display is investigated in this thesis. The thin and flexible assembly experiences deformations due to the thermal expansion caused by the solar irradiance. At the same time, pressure differentials caused by the cooling configuration inside the unit lead to flow-induced structural deflections. Severe deformations could cause flow obstruction of the cooling cavities around the LCD, leading to increased temperatures on the display potentially damaging the LCD. This thesis presents Computational Fluid Dynamics and Heat Transfer (CFD/HT) models paired with static structural simulations in order to characterize the behavior of the displays. These computer models were pivotal to the determination and prediction of the total deformation and modal shape of large LCD panels. Validation of the CFD/HT and structural simulations is crucial when using simulations to drive design decisions. Thermocouples were installed on the units in order to record LCD surface temperatures, while LCD deflections were measured with a Manual Insulating Glass (MIG) gauge. Pressure sensors were also employed to validate the pressure contours from the CFD/HT simulations. By understanding these deformations, design choices can be made to prescribe parameters optimizing the cooling of the unit. At the same time, these decisions ensure that the components remain as flat as possible, providing good image quality and the best experience to the end user.
dc.description.degree M.S.
dc.format.mimetype application/pdf
dc.identifier.uri https://hdl.handle.net/1853/72448
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Fluid Structural Modeling
dc.subject Computational Fluid Dynamics
dc.subject Structural Simulations
dc.subject Thermal Deflection
dc.title Thermal-Fluid-Structure Interaction Modeling of Outdoor Digital Displays
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Joshi, Yogendra
local.contributor.corporatename College of Engineering
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
relation.isAdvisorOfPublication 63ef328b-076b-44b7-92a9-0f7dd03fa1fa
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
thesis.degree.level Masters
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