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Multi-Row Film Cooling Boundary Layers

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Date Issued:
2015
Abstract/Description:
High fidelity measurements are necessary to validate existing and future turbulence models for the purpose of producing the next generation of more efficient gas turbines. The objective of the present study is to conduct several different measurements of multi-row film cooling arrays in order to better understand the physics involved with injection of coolant through multiple rows of discrete holes into a flat plate turbulent boundary layer. Adiabatic effectiveness distributions are measured for several multi-row film cooling geometries. The geometries are designed with two different hole spacings and two different hole types to yield four total geometries. One of the four geometries tested for adiabatic effectiveness was selected for flowfield measurements. The wall and flowfield are studied with several testing techniques, including: particle image velocimetry, hot wire anemometry, pressure sensitive paint and discrete gas sampling.
Title: Multi-Row Film Cooling Boundary Layers.
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Name(s): Natsui, Gregory, Author
Kapat, Jayanta, Committee Chair
Raghavan, Seetha, Committee Member
Vasu Sumathi, Subith, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2015
Publisher: University of Central Florida
Language(s): English
Abstract/Description: High fidelity measurements are necessary to validate existing and future turbulence models for the purpose of producing the next generation of more efficient gas turbines. The objective of the present study is to conduct several different measurements of multi-row film cooling arrays in order to better understand the physics involved with injection of coolant through multiple rows of discrete holes into a flat plate turbulent boundary layer. Adiabatic effectiveness distributions are measured for several multi-row film cooling geometries. The geometries are designed with two different hole spacings and two different hole types to yield four total geometries. One of the four geometries tested for adiabatic effectiveness was selected for flowfield measurements. The wall and flowfield are studied with several testing techniques, including: particle image velocimetry, hot wire anemometry, pressure sensitive paint and discrete gas sampling.
Identifier: CFE0005982 (IID), ucf:50776 (fedora)
Note(s): 2015-12-01
Ph.D.
Engineering and Computer Science, Mechanical and Aerospace Engineering
Doctoral
This record was generated from author submitted information.
Subject(s): Film Cooling -- Multi-Row -- Full-Coverage -- Gas Turbine Heat Transfer -- Experimental -- Pressure Sensitive Paint -- Particle Image Velocimetry -- Boundary Layer
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0005982
Restrictions on Access: campus 2020-12-15
Host Institution: UCF

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