Uncertainty Quantification of Slug Calorimeters in High-Enthalpy Flow
Location
Innovation Lab, Room 212
Start Date
4-2-2025 9:30 AM
End Date
4-2-2025 10:00 AM
Presentation Date
2 April 2025, 9:30am - 10:00am
Biography
Cianne Arnau is from Poplar Bluff, MO, and Sylmar, CA. She is currently a junior in Aerospace Engineering at the Missouri University of Science and Technology. She does research for the Aerodynamics Research Laboratory on campus. She is also heavily involved on campus with several organizations such as the Society of Hispanic Professional Engineers (SHPE), Delta Omicron Lambda (DOL), and the Missouri S&T Satellite Team (MSAT). Cianne comes from a military family, so her future goal is to work in the aerospace defense industry.
Meeting Name
2025 - Miners Solving for Tomorrow Research Conference
Department(s)
Mechanical and Aerospace Engineering
Document Type
Presentation
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 The Authors, All rights reserved
Uncertainty Quantification of Slug Calorimeters in High-Enthalpy Flow
Innovation Lab, Room 212
Comments
Advisor: Davide Vigano
Abstract:
This research investigates uncertainty propagation in high-enthalpy calorimeters. Slug calorimeters are the standard instruments for measuring heat flux in arc-heated wind tunnels, a critical parameter for testing thermal protection systems (TPS). Uncertainties in calorimeter measurements directly affect the accuracy of TPS material characterization. Despite their use for over 60 years, little is known about the exact uncertainty in these measurements, with literature estimating it at 15%. This large uncertainty hampers the testing of new materials and, consequently, the development of future space missions. In this work, a numerical model of the calorimeter was developed, and a Monte Carlo method was applied to analyze uncertainty propagation in heat flux measurements. Additionally, Sobol's indices were used to identify the dominant sources of uncertainty, providing insights into improving the accuracy of calorimeter-based heat flux measurements.