Constant Temperature Anemometry (CTA) - Hot-Wire Anemometry - Thermal Anemometry

Constant Temperature Anemometry (CTA) Measurement Systems

Measurement of turbulent flows

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.

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


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

Learn more about CTA

Constant Temperature Anemometry (CTA) Measurement SystemsMeasurement Principles

CTA is a measurement technique well suited for the study of fine structures in turbulent flows. The working principle is based on the cooling effect of a flow on a heated body. Read More

Constant Temperature Anemometry (CTA) Measurement SystemsApplication Examples

Wind tunnel experiments for testing aerodynamics of e.g. cars, trains and aircraft Read More


Constant Temperature Anemometry (CTA) Measurement Systems

Flow Field Diagnostics - Constant Temperature Anemometry 346

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