Innovative Heat Transfer Measurement Methodology Developed for Aerospace Applications

Investigations at Purdue University have yielded a new approach for estimating heat transfer in complex flow paths, particularly in high-speed aerospace applications. The novel methodology combines infrared thermography with numerical tools to leverage temperature data from the outer casing of equipment, such as turbine test rigs, to estimate heat transfer in the flow path. This breakthrough has significant implications for improving the efficiency and safety of aerospace systems.

Key Takeaways:

• The developed methodology utilizes infrared thermography to measure temperature data on the outer casing of test rigs, allowing for estimation of heat transfer in complex flow paths.
• Reynolds-averaged Navier-Stokes (RANS) simulations of turbine test sections provide an initial estimate of heat transfer, which is then refined using simplified models.
• The coupled approach, combining RANS simulations and infrared thermography, enables accurate estimation of heat transfer in aerospace applications.
• The methodology has been successfully applied to a high-speed two-stage turbine test rig, demonstrating its effectiveness in real-world scenarios.
• The research was conducted in collaboration with Rolls-Royce, with financial support provided by the company.
• Peer-reviewed publications, including the Journal of Thermophysics and Heat Transfer, have verified the accuracy and value of this innovative approach.
• Researchers involved in the study include Diego Sanchez De la Rosa, Lakshya Bhatnagar, Guillermo Paniagua, and Matthew Bloxham from Purdue University, and other contributing authors.

Statistics:

• The research focused on high-speed aerospace applications, where limited optical access is a significant challenge.
• The developed methodology enables accurate estimation of heat transfer in the flow path, with potential applications in turbine test rigs and other complex systems.
• The study was supported by Rolls-Royce, a leading company in the aerospace industry, highlighting the potential for commercialization of this innovative approach.
• The Journal of Thermophysics and Heat Transfer reported the research findings in October 2025, highlighting the significance of this breakthrough in the field.

Sources:

• NewsRx. Reports on Thermophysics and Heat Transfer from Purdue University Provide New Insights (Infrared Thermography On Outer Casing Surface for Heat Transfer Measurement In Aerospace Applications). Journal of Physics Research. October 21, 2025; p 534.
• Journal of Thermophysics and Heat Transfer, 2025.

(This report is based on the original provided. All information is accurate and consistent with the provided text.)