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Experimental Validation of a Hot Gas Turbine Particle Deposition Facility

Smith, Christopher Stephen
http://rave.ohiolink.edu/etdc/view?acc_num=osu1269547595

Abstract Details

2010, Master of Science, Ohio State University, Aeronautical and Astronautical Engineering.
A new turbine research facility at The Ohio State University Aeronautical and Astronautical Research Lab has been constructed. The purpose of this facility is to re-create deposits on the surface of actual aero-engine Nozzle Guide Vane (NGV) hardware in an environment similar to what the hardware was designed for. This new facility is called the Turbine Reacting Flow Rig (TuRFR). The TuRFR provides air at temperatures up to 1200 °C and at inlet Mach numbers comparable to those found in an actual turbine (~0.1). Several validation studies have been undertaken which prove the capabilities of the TuRFR. These studies show that the temperature entering the NGV cascade is uniform, and they demonstrate the capability to provide film cooling air to the NGV cascade at flow rates and density ratios comparable to the NGV design. Deposition patterns have also been created on the surface of actual NGV hardware. Deposition was created at different flow temperatures, and it was found that deposition levels decrease with decreasing gas temperature. Also, film cooling levels were varied from 0% film cooling to 4% film cooling. It was found that with increased rates of film cooling deposition decreased. With the TuRFR capabilities demonstrated, research on the effects of deposition on the aerodynamic performance of the NGV hardware was conducted. Integrated non-dimensional total pressure loss values were calculated in an exit Rec range of 0.2x106 to 1.7x106 for a deposit roughened NGV cascade and a smooth cascade. The data suggests that deposition causes increased losses across the NGV cascade and possibly earlier transition. The data also suggests a possible region of separated flow in the NGV cascade which disappears at higher exit Reynolds numbers. These results are similar to those found in the literature.
Jeffrey Bons, PhD (Advisor)
James Gregory, PhD (Committee Member)
Ali Ameri, PhD (Committee Member)
99 p.
Mechanical Engineering
turbine; deposition; gas turbine; turbine deposition; turbine aerodynamics

Recommended Citations

Citations

  • Smith, C. S. (2010). Experimental Validation of a Hot Gas Turbine Particle Deposition Facility [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269547595

    APA Style (7th edition)

  • Smith, Christopher. Experimental Validation of a Hot Gas Turbine Particle Deposition Facility. 2010. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1269547595.

    MLA Style (8th edition)

  • Smith, Christopher. "Experimental Validation of a Hot Gas Turbine Particle Deposition Facility." Master's thesis, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269547595

    Chicago Manual of Style (17th edition)

osu1269547595
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This open access ETD is published by The Ohio State University and OhioLINK.