All Stories

  1. Computations for a Subsonic Wind Tunnel and Discrepancies In As-Built vs. As-Designed CFD Simulations

    Article • July 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  2. Summary of Data from the VT-NASA Blind Validation CFD Challenge Case

    Article • July 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  3. Experimental Results for the VT-NASA CFD Turbulence Model Blind Validation Challenge

    Article • July 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  4. Evaluating Models for Sub-Convective Pressure Fluctuations in Turbulent Boundary Layers

    Article • May 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Humza Butt, Dr Todd Lowe

  5. Identification of Sources of Sub-Convective Wall Pressure Fluctuations Using Space-Time Pressure-Velocity Correlations

    Article • May 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Humza Butt, Dr Todd Lowe

  6. Characterization of the Far-Wake of a Wall-Mounted Obstacle Embedded in a Turbulent Boundary Layer

    Article • May 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Humza Butt, Dr Todd Lowe

  7. The Characteristics of Sub-Convective Wall Pressure Fluctuations in a Turbulent Boundary Layer

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Humza Butt, Dr Todd Lowe, Bhavika Sharma

  8. Experimental Measurements on a Vortex Tube Separator Array

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

    Adit Acharya, Dr Todd Lowe

  9. Modeling the Surface Pressure Spectrum Beneath Turbulent Boundary Layers in Pressure Gradients

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

    Danny Fritsch, Dr Todd Lowe, Professor Richard D Sandberg

  10. Understanding the pressure fluctuations that arise within smooth surfaces subject to turbulent flows

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

    Dr Todd Lowe, Dr. Stewart A Glegg, Humza Butt

  11. The Space-Time Correlation of Pressure Under High Reynolds Number Smooth Wall Turbulent Boundary Layers in Pressure Gradient Family

    Article • January 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Danny Fritsch, Dr Todd Lowe

  12. Flow Field Features of the BEVERLI Hill Model

    Article • January 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Julie Duetsch-Patel, Danny Fritsch, Dr Todd Lowe

  13. The Effect of Grazing Flow on Pinhole Condenser Microphones

    Article • January 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Danny Fritsch, Dr Todd Lowe

  14. RANS Simulations of Thermally Non-Uniform Supersonic Jets

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

    Dr Todd Lowe, Kevin D'Souza

  15. The Pressure Signature of High Reynolds Number Smooth Wall Turbulent Boundary Layers in Pressure Gradient Family

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

    Dr Todd Lowe, Danny Fritsch

  16. Computational Fluid Dynamic Analysis for the Assessment of Experimental Design Risks and Flow Sensitivities for a Three-Dimensional Bump Flow

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

    Dr Todd Lowe, Julie Duetsch-Patel, Danny Fritsch

  17. Analysis of Stresses in Metal Sheathed Thermocouples in High-Temperature, Hypersonic Flows

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

    Dr Todd Lowe, Prof. Rakesh K Kapania, Sean Powers

  18. 250 kHz three-component Doppler velocimetry at 32 simultaneous points: a new capability for high speed flows

    Article • Measurement Science and Technology, April 2020, Institute of Physics Publishing

    Dr Todd Lowe

  19. Non-spherical particle size estimation using supervised machine learning

    Article • Applied Optics, March 2020, Optical Society of America (OSA)

    Dr Todd Lowe

  20. Geometric scattering removal in cross-correlation Doppler global velocimetry by structured illumination

    Article • Measurement Science and Technology, January 2020, Institute of Physics Publishing

    Dr Todd Lowe

  21. In-flight thrust monitoring: an acoustics-based approach

    Article • Aircraft Engineering and Aerospace Technology, January 2020, Emerald

    Dr Todd Lowe

  22. Use of Thermal Nonuniformity to Reduce Supersonic Jet Noise

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

    Dr Todd Lowe

  23. Turbine Engine Ingested Particle Monitoring: A Novel Application of Quantum Cascade IR Laser Extinction

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

    Chi Young Moon, Dr Todd Lowe

  24. Mean Flow and Turbulence of a Heated Supersonic Jet with Temperature Nonuniformity

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

    Dr Todd Lowe

  25. Hybrid RANS/LES Turbulence Model Applied to a Transitional Unsteady Boundary Layer on Wind Turbine Airfoil

    Article • Fluids, July 2019, MDPI AG

    Dr Todd Lowe

  26. Aerodynamic Analysis of Total Temperature Probe Thermal Performance Using Conjugate Heat Transfer

    Article • Journal of Thermophysics and Heat Transfer, July 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Joseph Schetz, Dr Todd Lowe

  27. Measurement Drift in 3-Hole Yaw Pressure Probes From 5 Micron Sand Fouling at 1050° C

    Article • June 2019, ASME International

    Dr Todd Lowe

  28. On the Application of Particle Image Velocimetry for Turbofan Engine Flow Quantification

    Article • June 2019, ASME International

    Dr Todd Lowe

  29. Laser Light Sheet Flow Visualization of the Space Launch System Booster Separation Test

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

    Dr Paul M Danehy, Dr Todd Lowe

  30. Three-Velocity-Component Cross-Correlation Doppler Global Velocimetry for the Space Launch System Booster Separation Test in the NASA Langley Unitary Plan Wind Tunnel

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

    Dr Todd Lowe

  31. Space Launch System Booster Separation Supersonic Powered Testing with Surface and Off-body Measurements

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

    Dr Paul M Danehy, Dr Todd Lowe, Heather Houlden

  32. Laser velocimetry for turbofan inlet distortion applications

    Article • Aircraft Engineering and Aerospace Technology, June 2019, Emerald

    Dr Todd Lowe

  33. Coupled velocity and temperature acoustic tomography in heated high subsonic mach number flows

    Article • Measurement Science and Technology, May 2019, Institute of Physics Publishing

    Dr Todd Lowe

  34. Filtered Rayleigh Scattering for Velocity and Temperature Measurements of a Heated Supersonic Jet with Thermal Non-Uniformity

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

    Dr Todd Lowe

  35. Space-time Description of the Density Near-field in a Non-uniformly Heated Jet.

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

    Dr Todd Lowe

  36. Statistical Flow Structures in Heated Supersonic Jets with Offset Temperature Non-Uniformities

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

    Dr Todd Lowe

  37. Synthesis of convection velocity and turbulence measurements in three-stream jets

    Article • Experiments in Fluids, April 2019, Springer Science + Business Media

    Dr Todd Lowe

  38. Investigation of velocity and temperature measurement sensitivities in cross-correlation filtered Rayleigh scattering (CCFRS)

    Article • Measurement Science and Technology, March 2019, Institute of Physics Publishing

    Dr Todd Lowe

  39. An experimental study on the coupling between adjacent Hartmann whistles

    Article • International Journal of Aeroacoustics, March 2019, SAGE Publications

    Todd Lowe, Dr Todd Lowe

  40. Vortical flow development in round ducts across scales for engine inlet applications

    Article • Experiments in Fluids, March 2019, Springer Science + Business Media

    Dr Todd Lowe

  41. Laser Light Sheet Flow Visualization of the Space Launch System Booster Separation Test

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

    Dr Paul M Danehy, Dr Todd Lowe

  42. Three-Velocity-Component Cross-Correlation Doppler Global Velocimetry for the Space Launch System Booster Separation Test in the NASA Langley Unitary Plan Wind Tunnel

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

    Dr Todd Lowe

  43. Space Launch System Booster Separation Supersonic Powered Testing with Surface and Off-body Measurements

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

    Dr Paul M Danehy, Dr Todd Lowe, Heather Houlden

  44. Distributed Anemometry via High-Definition Fiber Optic Sensing

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

    Dr. Osgar J Ohanian, Dr Todd Lowe, Andrew Boulanger

  45. Demonstration of 250 kHz Three-Component Velocity Measurements using TRDGV at 32 Simultaneous Points

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

    Dr Todd Lowe

  46. Outdoor Acoustic Measurements of the Virginia Tech Heated Supersonic Jet Rig Using Ground Microphones

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

    Dr Todd Lowe

  47. Definition of Arbitrary Swirl Distortions by Solutions to the Helmholtz Equation

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

    Dustin Frohnapfel, Walter F O'Brien, Dr Todd Lowe

  48. Experimental Investigation on the Acoustic Field and Convection Velocity of Structures in a Heated Jet With Centered Thermal Non-Uniformity

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

    Dr Todd Lowe

  49. MOUNT INTERFERENCE EFFECTS ON TOTAL TEMPERATURE PROBES

    Article • January 2019, Begell House

    Dr Todd Lowe

  50. Experimental Investigation of the Very Near Pressure Field of a Heated Supersonic Jet with a Total Temperature Non-Uniformity

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

    Dr Todd Lowe

  51. The Flow and Turbulence Characteristics of a Heated Supersonic Jet with an Offset Total Temperature Non-Uniformity

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

    Dr Todd Lowe

  52. Turbofan Nose Cone Interactions With Inlet Swirl

    Article • June 2018, ASME International

    Dr Todd Lowe

  53. Enhanced Low-Order Model with Radiation for Total Temperature Probe Analysis and Design

    Article • SAE International Journal of Aerospace, May 2018, SAE International

    Dr Todd Lowe

  54. Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

    Article • Journal of Engineering for Gas Turbines and Power, May 2018, ASME International

    Dr Todd Lowe

  55. Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

    Article • Journal of Engineering for Gas Turbines and Power, May 2018, ASME International

    Dr Todd Lowe

  56. Nonintrusive Gas-Turbine Engine-Exhaust Characterization Using Acoustic Measurements

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

    Todd Lowe, Dr Todd Lowe

  57. Unsteady boundary layer development on a wind turbine blade: an experimental study of a surrogate problem

    Article • Experiments in Fluids, March 2018, Springer Science + Business Media

    Dr Todd Lowe

  58. StreamVane Turbofan Inlet Swirl Distortion Generator: Mean Flow and Turbulence Structure

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

    Dr Todd Lowe, Walter F O'Brien

  59. Cross-Correlation Doppler Global Velocimetry using Rayleigh and Mie Scattering

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

    Dr Todd Lowe

  60. Decomposition of Periodic Eddies with Varying Energy in a Turbulent Flow Using a Directional Averaging Technique

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

    Chi Young Moon, Dr Todd Lowe

  61. Large-Eddy Simulations of Flow Control Effects of a DBD Plasma Actuator at Various Burst Frequencies on a Dynamic Flowfield around a Pitching NACA0012 Airfoil at Reynolds Number of 256,000

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

    Dr Todd Lowe

  62. Numerical Study of Transitional Unsteady Boundary Layer on Wind Turbine Airfoil Using Hybrid RANS/LES Turbulence Model

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

    Dr Todd Lowe

  63. Non-intrusive acoustic measurement of flow velocity and temperature in a high subsonic Mach number jet

    Article • Measurement Science and Technology, December 2017, Institute of Physics Publishing

    Dr Todd Lowe

  64. Enhanced Low-Order Model with Radiation for Total Temperature Probe Analysis and Design

    Article • September 2017, SAE International

    Dr Todd Lowe

  65. Computational Modeling of Total-Temperature Probes

    Article • Journal of Thermophysics and Heat Transfer, July 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe, Dr. Joseph Schetz, Todd Lowe

  66. Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

    Article • June 2017, ASME International

    Dustin Frohnapfel, Dr Todd Lowe

  67. Application of Proper Orthogonal Decomposition to High Speed Imaging for the Study of Combustion Oscillations

    Article • June 2017, ASME International

    Dr Todd Lowe

  68. Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

    Article • June 2017, ASME International

    Dr Todd Lowe

  69. Synthesis of Convection Velocity and Turbulence Measurements in Three-Stream Jets for Investigation of Noise Sources

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

    Dr Todd Lowe

  70. Eddy Convection in Cold and Heated Supersonic Jets

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

    Dr Todd Lowe

  71. Experimental Investigation of a Heated Supersonic Jet with Total Temperature Non-Uniformity

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

    Dr Todd Lowe

  72. Extension of sonic anemometry to high subsonic Mach number flows

    Article • Measurement Science and Technology, February 2017, Institute of Physics Publishing

    Dr Todd Lowe

  73. Fan Rotor Flow Measurements in a Turbofan Engine Operating with Inlet Swirl Distortion

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

    Dustin Frohnapfel, Walter F O'Brien, Dr Todd Lowe

  74. Swirling Flow Evolution Part 2: StreamFlow 2D+t Model Validated with Stereo PIV Measurements

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

    Dustin Frohnapfel, Walter F O'Brien, Dr Todd Lowe

  75. Swirling Flow Evolution Part 1: Design and Stereo PIV Measurements at Select Planes

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

    Walter F O'Brien, Dr Todd Lowe

  76. Numerical and experimental study of the unsteady transitional boundary layer on a wind turbine airfoil

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

    Dr Todd Lowe

  77. Non-Intrusive Measurement of Gas Turbine Engine Exhaust Characteristics using Acoustic Measurements

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

    Dr Todd Lowe

  78. Fluctuating Pressure Gradients in Heated Supersonic Jets

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

    Dr Todd Lowe, Chris Nelson

  79. Scale-up of the Time-Resolved Doppler Global Velocimetry Technique

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

    Dr Todd Lowe

  80. Measurements of Fan Response to Inlet Total Pressure and Swirl Distortions Produced by Boundary Layer Ingesting Aircraft Configurations

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

    Dustin Frohnapfel, Walter F O'Brien, Dr Todd Lowe

  81. An overview of recent results using the StreamVane method for generating tailored swirl distortion in jet engine research

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

    Walter F O'Brien, Dr Todd Lowe

  82. A Hybrid Technique for Laser Flare Reduction

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

    Dr Todd Lowe

  83. Velocity Statistics and Spectra in Three-Stream Jets

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

    Dr Todd Lowe

  84. Eddy Convection in Developing Heated Supersonic Jets

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

    Dr Todd Lowe

  85. Computational Modeling of Radiation Effects on Total Temperature Probes

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

    Dr. Joseph Schetz, Dr Todd Lowe

  86. Stereoscopic PIV measurements in a turbofan engine inlet with tailored swirl distortion

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

    Walter F O'Brien, Dr Todd Lowe

  87. A Diagnostic Technique for Particle Characterization Using Laser Light Extinction

    Article • June 2015, ASME International

    Dr. Srinath V Ekkad, Dr Todd Lowe

  88. An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries

    Article • June 2015, ASME International

    Dr Todd Lowe

  89. Particle Image Velocimetry Applications Using Fluorescent Dye-doped Particles

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

    Dr Paul M Danehy, Dr Todd Lowe

  90. Fourth-order Spectral Statistics in the Developing Shear Layers of Hot Supersonic Jets

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  91. The Experimental Studies of Improving the Aerodynamic Performance of a Turbine Exhaust System

    Article • June 2014, ASME International

    Dr Todd Lowe

  92. The Effect of Particle Lag on Supersonic Turbulent Boundary Layer Statistics

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  93. Stereoscopic PIV Measurements of Swirl Distortion on a Full-Scale Turbofan Engine Inlet

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Walter F O'Brien, Dr Todd Lowe

  94. Spectral analysis of over-expanded cold jets via 3-component point Doppler velocimetry

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  95. Time-Domain Cross-Correlation Scan DGV (CCS-DGV) for Mean-Velocity Boundary Layer Measurements

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  96. Experimental Reynolds Stress Spectra in Hot Supersonic Round Jets

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Todd Lowe

  97. Laser velocimetry with fluorescent dye-doped polystyrene microspheres

    Article • Optics Letters, April 2013, Optical Society of America (OSA)

    Dr Todd Lowe

  98. A laser-Doppler velocimeter system for near-field velocity vector measurements in large facilities

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

    Dr Todd Lowe

  99. Novel Laser Doppler Acceleration Measurements of Particle Lag Through a Shock Wave

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

    Dr Todd Lowe

  100. A Laser-Based Optical Approach for Measuring Scour Depth around Hydraulic Structures

    Article • October 2010, American Society of Civil Engineers (ASCE)

    Dr Todd Lowe