Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Thesis Final.pdf (3.76 MB)

ETD Abstract Container

Abstract Header

A Study of the Effects of Turning Angle on Particle Deposition in Gas Turbine Combustor Liner Effusion Cooling Holes

Blunt, Rory Alexander Fabian
http://orcid.org/0000-0003-0853-7040
http://rave.ohiolink.edu/etdc/view?acc_num=osu1460735904

Abstract Details

2016, Master of Science, Ohio State University, Mechanical Engineering.
The deposition of particulate in gas turbine cooling systems with a focus on single wall effusion holes was investigated. This study focused on the effect that flow turning angle into the cooling hole has on the blockage of these holes. The test hardware is based on a single walled combustor liner with angled effusion holes. By allowing the mass flow through the test system to decrease as deposition occurred the pressure drop across the test coupon was held at 3% of the discharge pressure. The mean flow turning angle was varied between favorable (10°) and adverse (130°) by mounting the plate in different orientations on a stalled plenum. The dust used was 0-10 µm Arizona Road Dust (ARD). These tests were run with a coupon temperature of 870 °C; this was achieved by use of an electric kiln. Flow reduction of the adverse test plates was around twice as much as the favorable condition; however both conditions had very similar capture efficiencies. 3D scans and sectioned test plates were used to investigate the different structures of the deposition that formed on the test plates and in the effusion holes. It is seen that turning angle does not influence the amount of captured mass but just the location of where that mass is captured and so its effect on the flow. A companion CFD study was also performed to explore the ability of computational models to predict the impact location and deposition depending on the impingement angle. This model was a simplified case and modeled a single effusion hole with the same geometry as the test plate. The inlet conditions were held constant and based on the experimental data. Particles were tracked with an Eulerian-Lagrangian method and it was seen that the predicted first impact locations closely matched the deposition seen in the experimental setup. Additionally a sticking model was used to predict deposition. It was seen that under the simulated conditions this model predicted deposition similar to the experimental results.
Jeffrey Bons, Dr. (Advisor)
Randall Mathison, Dr. (Committee Member)
105 p.
Aerospace Engineering; Fluid Dynamics; Mechanical Engineering
Turning Angle; Deposition; Turbine; Combustor Liner; Effusion; Cooling Holes; CFD; Sticking; Computational; High Temperature; Validate; Engine; Modeling;

Recommended Citations

Citations

  • Blunt, R. A. F. (2016). A Study of the Effects of Turning Angle on Particle Deposition in Gas Turbine Combustor Liner Effusion Cooling Holes [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460735904

    APA Style (7th edition)

  • Blunt, Rory. A Study of the Effects of Turning Angle on Particle Deposition in Gas Turbine Combustor Liner Effusion Cooling Holes . 2016. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1460735904.

    MLA Style (8th edition)

  • Blunt, Rory. "A Study of the Effects of Turning Angle on Particle Deposition in Gas Turbine Combustor Liner Effusion Cooling Holes ." Master's thesis, Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460735904

    Chicago Manual of Style (17th edition)

osu1460735904
709
© 2016, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.