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The Effects of Chemistry and Particle Size on Erosion of Deposits in Gas Turbine Cooling Circuits

Subasic, Noah
http://rave.ohiolink.edu/etdc/view?acc_num=osu1712935586096091

Abstract Details

2024, Master of Science, Ohio State University, Aerospace Engineering.
The role of quartz in gas turbine hot section deposition was investigated by varying both its size and percent concentration in Air Force Research Lab test dust (AFRL-02). The size distributions of quartz tested were 0 – 3 μm, 0 – 10 μm (baseline), and 10 – 20 μm while percent concentration ranged from 0% to 100%. The experiments replicated a gas turbine effusion cooling circuit with a flow temperature of 894K and plate surface temperature of 1144K. Aerosolized AFRL-02 dust was delivered to the test article, and capture efficiency, hole capture efficiency, blockage per gram, normalized deposit height, and effective area were recorded. A quartz size distribution of 0 – 3 μm showed the greatest deposition while 10 – 20 μm consistently deposited the least. Varying percent concentration of quartz had less obvious trends. While at a size distribution of 10 – 20 μm, increasing quartz concentration decreased deposition in all four assessment parameters. For a size distribution of 0 – 3 μm, increasing quartz concentration originally decreased deposition until greatly increasing it past a concentration of 68%. Quartz has been identified as a predominantly erosive mineral to deposits, but results suggest the size distribution contributes to deposition at a rate greater than or equal to percent concentration. The following study elucidates the effects of both size and concentration of quartz in a heterogenous mineral blend.
Jeffrey Bons (Advisor)
Randall Mathison (Committee Member)
61 p.
Aerospace Engineering
deposition; particle size; erosion; chemistry; CMAS; cooling circuits; gas turbine; inlet guide vanes

Recommended Citations

Citations

  • Subasic, N. (2024). The Effects of Chemistry and Particle Size on Erosion of Deposits in Gas Turbine Cooling Circuits [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1712935586096091

    APA Style (7th edition)

  • Subasic, Noah. The Effects of Chemistry and Particle Size on Erosion of Deposits in Gas Turbine Cooling Circuits. 2024. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1712935586096091.

    MLA Style (8th edition)

  • Subasic, Noah. "The Effects of Chemistry and Particle Size on Erosion of Deposits in Gas Turbine Cooling Circuits." Master's thesis, Ohio State University, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=osu1712935586096091

    Chicago Manual of Style (17th edition)

osu1712935586096091
48
© 2024, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.