Infrared thermal velocimetry

Jaewon Chung, Youngshik Shin, Kenneth Petigrew, Peter Chapman, Costas P. Grigoropoulos, Ralph Greif

Research output: Contribution to journalArticlepeer-review


Infrared thermal velocimetry is a new technique for the measurement of flow velocity. This non-intrusive technique was used to measure the velocity in a channel. In detail, a pulse of several milliseconds of a 5W CO2 laser generates a transient temperature response in a flowing liquid. Recording the radiative thermal images of the moving heated liquid, permitted measurement of the flow velocity. This method has powerful characteristics; a wide range of velocities may be measured and the applications include MEMS fluidic devices. In this paper, experimental results are obtained from infrared thermal velocimetry for a syringe forced flow. Numerical results for the system are presented and compared with experimental data. Phenomena which are relevant to typical MEMS thermal flow sensors are also discussed.

Original languageEnglish
Pages (from-to)329-333
Number of pages5
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Issue number7
Publication statusPublished - 2001 Jan 1
Externally publishedYes


  • Fluidic MEMS
  • Infrared thermal velocimetry
  • Micro-DPIV
  • Thermal flow sensor

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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