Constant Temperature Anemometry (CTA) – Hot-Wire Anemometry

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What is Constant Temperature Anemometry (CTA)?

Constant Temperature Anemometry (CTA), also known as Thermal Anemometry, is a technique for the measurement of turbulence in 1, 2 or 3-dimensional gas and liquid flows, using hot-wire or hot-film probes inserted in the flow.

Constant Temperature Anemometry is particularly suitable for the measurement of flows with very fast fluctuations at a point (high turbulence) and the study of flow microstructures, where there is a need to resolve small flow eddies down to the order of tenths of a mm.

Streamline CTA
Streamline CTA
CTA Features
  • Measures velocities from a few cm/s to supersonic.
  • High temporal resolution: fluctuations up to several hundred kHz.
  • High spatial resolution: eddies down to 1 mm or less.
  • Measures all three velocity components simultaneously.
  • Provides instantaneous velocity information.
  • Continuous analog output.
Jet Study Application of CTA
Jet Study Application of CTA
Experimental Set up
Experimental Set up