Using anisotropic heat flux sensors in aerodynamic experiments
Abstract
We present the results of comparative measurements of the heat flux to a flat plate in a supersonic flow at a Mach number of M = 6, which were performed using the two following anisotropic heat sensors with different thicknesses of sensor elements: (i) Atomic Layer Thermo Pile (ALTP, Fortech GmbH, Germany) with a thickness of ∼0.5 × 10‑6 m and (ii) gradient heat flux sensor (GHFS, St. Petersburg State Polytechnic University, Russia) with a thickness of ∼2 × 10‑4 m. The ALTP sensor can be used for directly measuring heat fluxes in processes with a characteristic time above 10‑6 s. A method for mathematically processing the GHFS response signal is proposed that allows heat flux oscillations to be revealed in gasdynamic process with a characteristic time on the order of 10‑4 s.
- Publication:
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Technical Physics Letters
- Pub Date:
- March 2009
- DOI:
- Bibcode:
- 2009TePhL..35..214B
- Keywords:
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- 47.27.T-;
- 52.30.Cv