A new type of heat transfer sensor has been developed in which the sensing element is a short length (∼3mm) of single mode optical fibre acting as a Fabry-Perot interferometer. The reflected light intensity follows a periodic transfer function, and the phase change is proportional to the sensor’s spatially averaged temperature. We present results from three optical fibre sensors embedded as calorimeter gauges in a ceramic nozzle guide vane end wall model exposed to a transient heat flux of ∼100 kWm−2 in the Isentropic Light Piston Facility at DRA Pyestock Famborough, and validated by comparison with previous data from platinum thin film resistance gauges. The optical sensors exhibit high spatial resolution (∼5μm), high heat transfer resolution (∼1kWm−2), and wide temperature measurement bandwidth (100kHz) with intrinsic calibration. No electrical connections to the measurement volume are required and multiplexing is possible.
Fibre Optic Interferometric Heat Transfer Sensors for Transient Flow Wind Tunnels
- Views Icon Views
- Share Icon Share
- Search Site
Kidd, SR, Barton, JS, Jones, JDC, Chana, KS, & Matthews, IW. "Fibre Optic Interferometric Heat Transfer Sensors for Transient Flow Wind Tunnels." Proceedings of the ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. Volume 3A: General. Cincinnati, Ohio, USA. May 24–27, 1993. V03AT15A069. ASME. https://doi.org/10.1115/93-GT-218
Download citation file: