Location
Innovation Lab Atrium
Start Date
4-2-2025 2:00 PM
End Date
4-2-2025 3:30 PM
Presentation Date
2 April 2025, 2:00pm - 3:30pm
Biography
Allie Dingfield is a junior in mechanical engineering at Missouri S&T. In between classes, she is involved in Christian Campus Fellowship (CCF), is a member of the Honors Academy, is a Kummer Vanguard Scholar, and plays many intramural sports. She is also a residential assistant (RA) for the Women's Christian Campus House (WCCH). She has been part of the Aerodynamics Research Lab under Dr. Vigano since the fall of 2022, researching optical techniques to measure density in supersonic flows. She is originally from Omaha, Nebraska.
Meeting Name
2025 - Miners Solving for Tomorrow Research Conference
Department(s)
Mechanical and Aerospace Engineering
Document Type
Poster
Document Version
Final Version
File Type
event
Language(s)
English
Rights
© 2025 The Authors, All rights reserved
Quantitative Shadowgraph for Turbulence Measurements in Supersonic Flows
Innovation Lab Atrium
Comments
Advisor: Davide Vigano
Award: Best Poster Presentation - Undergraduate
Abstract:
The study of turbulence in compressible flows is crucial for various applications, such as optimizing air/fuel mixing in scramjet combustors. However, turbulence in compressible flows presents unique challenges compared to incompressible turbulence, since turbulent fluctuations extend to thermodynamic quantities, including density. Density fluctuations significantly influence the production term of Turbulent Kinetic Energy (TKE), which is used to quantify the intensity of turbulence in fluid flows. Despite advancements in velocity measurement, particularly in supersonic flows, density measurement remains inherently complex. This study refines a turbulence density measurement technique using shadowgraph imaging, tailored for the recently upgraded Missouri S&T supersonic wind tunnel. The developed technique enables the quantification of turbulent density fluctuations within the wind tunnel's free stream. Establishing accurate free-stream turbulence measurements is essential for ensuring reliable experimental testing in supersonic flow conditions.