Temperature-Sensitive Paint on a Rotating fan within NASA’s Glenn Research Center 9- by 15-Foot Low-Speed Wind Tunnel, showing instability of flow on fan blades when tested at the same speed but different loading.
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Temperature measurements can be taken by a variety of instruments, commonly including:
- Thermocouples (TCs)
- Resistance Temperature Detectors (RTD’s)
- Temperature-Sensitive Paint (TSP)
- Infrared camera
These instruments may provide information on many different flow characteristics, including:
- Fluid density
- Speed of sound (Mach number)
- Fluid viscosity
