All Stories

  1. Numerical Investigation of Freestream Turbulence Effect on Flow through Low-Pressure Turbine Cascade

    Article • June 2022, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  2. Numerical Investigation of Linear Low-Pressure Turbine Cascade with Periodic Unsteadiness Generating Device

    Article • June 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  3. Characterization of Periodic Unsteadiness Generator for Secondary Flow Studies

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard, Mitch Wolff

  4. Periodic Forcing of an Endwall Vortex in a Highly Loaded Low Pressure Turbine

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Mitch Wolff, Dr. Rolf Sondergaard

  5. Local Spatial Linear Stability Analysis of Low-Pressure Turbine Endwall Boundary Layer

    Article • AIAA Journal, June 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  6. Experimental and Numerical Characterization of Flow Through Highly Loaded Low-Pressure Turbine Cascade

    Article • Journal of Propulsion and Power, January 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  7. Numerical Investigation of Low-Pressure Turbine Junction Flow

    Article • AIAA Journal, October 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  8. Vortex Signature Identification in Surface Pressure Distributions Using Crease Detection Techniques

    Article • AIAA Journal, June 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  9. Numerical Simulations of Active Flow Control for Highly Loaded Low-Pressure Turbine Cascade

    Article • January 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  10. Computational Investigation of Secondary Flow Structures in Low Pressure Turbines

    Article • January 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  11. Secondary Loss Production Mechanisms in a Low Pressure Turbine Cascade

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard, Mitch Wolff

  12. The Effect of Profile Contouring on Secondary Flow Structures in Low Pressure Turbines

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  13. Reynolds Number Effects on the Secondary Flow of Profile Contoured Low Pressure Turbines

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard, Mitch Wolff

  14. Numerical Investigation of Low-Pressure Turbine Endwall Flows

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  15. Detection of Near Wall Flow Features Using Surface Pressure Data

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  16. Investigation of Low-Pressure Turbine Endwall Flows: Simulations and Experiments

    Article • January 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  17. Time-Resolved Flow Properties in a Turbine Driven by Pulsed Detonations

    Article • Journal of Propulsion and Power, November 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Kurt P Rouser, Dr. Rolf Sondergaard

  18. End Wall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part II: Validation

    Article • Journal of Turbomachinery, January 2014, ASME International

    Dr. Rolf Sondergaard

  19. Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part I: Airfoil Design

    Article • Journal of Turbomachinery, January 2014, ASME International

    Dr. Rolf Sondergaard

  20. Parametric Optimization of Unsteady End Wall Blowing on a Highly Loaded Low-Pressure Turbine

    Article • Journal of Turbomachinery, January 2014, ASME International

    Chiara Bernardini, Dr. Rolf Sondergaard, Dr. Stuart I Benton

  21. Endwall Loss and Mixing Analysis of a High Lift Low Pressure Turbine Cascade

    Article • Journal of Turbomachinery, June 2013, ASME International

    Dr. Rolf Sondergaard

  22. Parametric Optimization of Unsteady Endwall Blowing on a Highly Loaded LPT

    Article • June 2013, ASME International

    Chiara Bernardini, Dr. Rolf Sondergaard, Dr. Stuart I Benton

  23. Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part I — Airfoil Design

    Article • June 2013, ASME International

    Dr. Rolf Sondergaard

  24. Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part II — Validation

    Article • June 2013, ASME International

    Dr. Rolf Sondergaard

  25. Performance Estimation of a Turbine Under Partial-Admission and Flow Pulsation Conditions at Inlet

    Article • June 2013, ASME International

    Dr. Rolf Sondergaard

  26. Experimental Performance Evaluation of a Turbine Driven by Pulsed Detonations

    Article • January 2013, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  27. Secondary Flow Loss Reduction Through Blowing for a High-Lift Front-Loaded Low Pressure Turbine Cascade

    Article • Journal of Turbomachinery, November 2012, ASME International

    Dr. Rolf Sondergaard, Dr. Stuart I Benton

  28. Experimental Comparison of DBD Plasma Actuators for Low Reynolds Number Separation Control

    Article • Journal of Turbomachinery, October 2012, ASME International

    Dr. Rolf Sondergaard

  29. Endwall Loss and Mixing Analysis of a High Lift Low Pressure Turbine Cascade

    Article • June 2012, ASME International

    Dr. Rolf Sondergaard

  30. Secondary Flow Loss Reduction Through Blowing for a High-Lift Front-Loaded Low Pressure Turbine Cascade

    Article • June 2012, ASME International

    Dr. Rolf Sondergaard, Dr. Stuart I Benton

  31. Surface Stress Sensitive Film as a Separation Control Sensor

    Article • January 2012, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  32. An Investigation of Reynolds Lapse Rate for Highly Loaded Low Pressure Turbine Airfoils With Forward and Aft Loading

    Article • Journal of Turbomachinery, January 2012, ASME International

    Dr. Rolf Sondergaard

  33. Heat Transfer Experiments on a Pulsed Detonation Driven Radial Turbine Exhaust

    Article • January 2011, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  34. Time-Accurate Flow Field and Rotor Speed Measurements of a Pulsed Detonation Driven Turbine

    Article • January 2011, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  35. Performance Evaluation of an Unsteady Turbine Driven by a Pulsed Detonation Combustor

    Article • January 2011, ASME International

    Dr. Rolf Sondergaard

  36. Experimental Comparison of DBD Plasma Acuators for Low Reynolds Number Separation Control

    Article • January 2011, ASME International

    Dr. Rolf Sondergaard

  37. Performance of a Turbine Driven by a Pulsed Detonation Combustor

    Article • January 2011, ASME International

    Dr. Rolf Sondergaard

  38. An Investigation of Reynolds Lapse Rate for Highly Loaded Low Pressure Turbine Airfoils With Forward and Aft Loading

    Article • January 2011, ASME International

    Dr. Rolf Sondergaard

  39. Predicting Separation and Transitional Flow in Turbine Blades at Low Reynolds Numbers—Part II: The Application to a Highly Separated Turbine Blade Cascade Geometry

    Article • Journal of Turbomachinery, January 2011, ASME International

    Dr. Rolf Sondergaard

  40. Predicting Separation and Transitional Flow in Turbine Blades at Low Reynolds Numbers—Part I: Development of Prediction Methodology

    Article • Journal of Turbomachinery, January 2011, ASME International

    Dr. Rolf Sondergaard

  41. Experimental Investigation of a High-Lift Low-Pressure Turbine Suction Surface

    Article • AIAA Journal, November 2010, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  42. Curved laser-sheet for conformal surface flow diagnostics

    Article • Experiments in Fluids, August 2010, Springer Science + Business Media

    Dr. Rolf Sondergaard

  43. Parametric Study of Unsteady Turbine Performance Driven by a Pulse Detonation Combustor

    Article • July 2010, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  44. Unsteady Performance of a Turbine Driven by a Pulse Detonation Engine

    Article • January 2010, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  45. A CFD and Experimental Investigation of Unsteady Wake Effects on a Highly Loaded Low Pressure Turbine Blade at Low Reynolds Number

    Article • January 2010, ASME International

    Dr. Rolf Sondergaard

  46. PIV Investigation of Periodic Unsteady Wakes over a Highly Loaded LPT Blade

    Article • August 2009, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  47. Turbulence Model Comparisons for Mixing Plane Simulations of a Multistage Low Pressure Turbine Operating at Low Reynolds Number

    Article • August 2009, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  48. A Mixing Plane Model Investigation of Separation and Transitional Flow at Low Reynolds Numbers in a Multistage Low Pressure Turbine

    Article • January 2009, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  49. Investigation of Losses on a Highly Loaded Low Pressure Turbine Blade with Unsteady Wakes

    Article • January 2009, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  50. PIV Investigation of a Highly-Loaded LPT Blade Using a Curved Laser Sheet

    Article • January 2009, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  51. LPT Flow Control at AFRL

    Article • June 2008, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  52. What is Needed in Experimental Methods Instruction- Perspectives from a Government Laboratory

    Article • January 2008, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  53. An Experimental Investigation of Suction Surface Flow Features on a High-Lift LPT

    Article • January 2008, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  54. Predicting Separation and Transitional Flow in Turbine Blades at Low Reynolds Numbers

    Article • January 2008, ASME International

    Dr. Rolf Sondergaard

  55. An experimental investigation of a low-pressure turbine blade suction surface using a shear and stress sensitive film

    Article • Experiments in Fluids, September 2007, Springer Science + Business Media

    Dr. Rolf Sondergaard

  56. Study of the Effects of the Blowing Ratio of Vortex Generator Jets in a Low Pressure Turbine

    Article • July 2007, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  57. Study of Separation Supression in a Low Pressure Turbine Using Pulsed Vortex Generator Jets

    Article • June 2007, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  58. Investigation of Separation Control in Low Pressure Turbine Using Pulsed Vortex Generator Jets

    Article • July 2006, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  59. Experimental Investigation of Low-Pressure Turbine Blade Suction Surface Stresses Using S3F

    Article • January 2006, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  60. A Large-Scale Investigation of a Flat-Plate Pulsed Vortex Generator Jet in Crossflow Using PIV

    Article • July 2005, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  61. Designing Low-Pressure Turbine Blades With Integrated Flow Control

    Article • January 2005, ASME International

    Dr. Rolf Sondergaard

  62. A PIV Study of Pulsed Vortex Generator Jets

    Article • July 2004, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  63. Parameterization of Boundary Layer Control Dimples on a Low Pressure Turbine Blade

    Article • July 2004, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  64. Control of Separation in Turbine Boundary Layers

    Article • June 2004, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Nina F. Yurchenko, Dr. Rolf Sondergaard

  65. Control of Low-Pressure Turbine Separation Using Vortex-Generator Jets

    Article • Journal of Propulsion and Power, July 2002, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  66. Reducing Low-Pressure Turbine Stage Blade Count Using Vortex Generator Jet Separation Control

    Article • January 2002, ASME International

    Dr. Rolf Sondergaard

  67. The Fluid Dynamics of LPT Blade Separation Control Using Pulsed Jets

    Article • Journal of Turbomachinery, January 2002, ASME International

    Dr. Rolf Sondergaard

  68. The Fluid Dynamics of LPT Blade Separation Control Using Pulsed Jets

    Article • June 2001, ASME International

    Dr. Rolf Sondergaard

  69. Turbine Separation Control Using Pulsed Vortex Generator Jets

    Article • Journal of Turbomachinery, January 2001, ASME International

    Dr. Rolf Sondergaard

  70. Turbine Separation Control Using Pulsed Vortex Generator Jets

    Article • May 2000, ASME International

    Dr. Rolf Sondergaard

  71. Control of low-pressure turbine separation using vortex generator jets

    Article • January 1999, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Rolf Sondergaard

  72. Experimental Study of the Unsteady Aerodynamics in a Linear Cascade With Low Reynolds Number Low Pressure Turbine Blades

    Article • June 1997, ASME International

    Dr. Rolf Sondergaard