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Implicit Large Eddy Simulation of Low-Reynolds-Number Transitional Flow Past the SD7003 Airfoil

Galbraith, Marshall Chistopher
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1242939414

Abstract Details

2009, MS, University of Cincinnati, Engineering : Aerospace Engineering.
A laminar separation bubble is known to be detrimental to the performance of airfoils operating at low Reynolds numbers (Re < 105). With increasing interest in Micro Air Vehicles (MAV), a clear understanding of the formation and subsequent turbulent breakdown of laminar separation bubbles is required for improved handling, stability, and endurance of MAV’s. A computational investigation of flow past the SD7003 airfoil over the Reynolds number range 104 < Re < 9x104 is presented. This airfoil was selected due to its robust laminar separating bubble and the availability of high-resolution experimental data. A high-order implicit large-eddy simulation (ILES) approach capable of capturing the laminar separation and subsequent three-dimensional breakdown is shown. The ILES methodology also predicts, without change in parameters, the passage into full airfoil stall at high incidence. In addition, computed separation, reattachment, and transition locations, as well as aerodynamic loads generally agree well with experimental data. Finally, a blowing/suction slot positioned near the leading edge was shown to energize the two-dimensional mode and reduced spanwise instabilities of the shear layer. This caused transition to occur further downstream and effectively eliminated the time mean laminar separation bubble.
Paul Orkwis, Prof (Committee Chair)
Mark Turner, Prof (Committee Member)
Shaaban Abdallah, Prof (Committee Member)
Miguel Visbal, Dr (Committee Member)
133 p.
Aerospace Materials; Engineering
Large Eddy Simulation; Laminar Separation Bubble; Transitional Flow; SD7003;

Recommended Citations

Citations

  • Galbraith, M. C. (2009). Implicit Large Eddy Simulation of Low-Reynolds-Number Transitional Flow Past the SD7003 Airfoil [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1242939414

    APA Style (7th edition)

  • Galbraith, Marshall. Implicit Large Eddy Simulation of Low-Reynolds-Number Transitional Flow Past the SD7003 Airfoil. 2009. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1242939414.

    MLA Style (8th edition)

  • Galbraith, Marshall. "Implicit Large Eddy Simulation of Low-Reynolds-Number Transitional Flow Past the SD7003 Airfoil." Master's thesis, University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1242939414

    Chicago Manual of Style (17th edition)

ucin1242939414
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© 2009, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.