Tunable AC thermal anemometry

Won Seok Chung, Oh Myoung Kwon, Du Seon Choi, Seungho Park, Young Ki Choi, Joon Sik Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper suggests and demonstrates a novel flow measurement technique: tunable AC thermal anemometry, that allows simple integration, robust measurement and extremely high accuracy. The principle and simple theoretical analysis of the technique are presented. To find the optimal condition at which the phase lag becomes most sensitive to the flow speed change, the phase lag was measured scanning the heating frequency from 1 to 100 Hz, while the flow speed of ethanol was increased stepwise from 0 to 40 mm/s. The sensitivity of the phase lag depended on the heating frequency and the flow speed. It was possible to measure the average flow speed of 0.7 mm/s with the resolution of 0.1 mm/s at 4 Hz.

Original languageEnglish
Pages (from-to)325-338
Number of pages14
JournalSuperlattices and Microstructures
Volume35
Issue number3-6
DOIs
Publication statusPublished - 2004 Mar 1

Fingerprint

velocity measurement
alternating current
time lag
Heating
heating
flow measurement
Flow measurement
Ethanol
ethyl alcohol
Scanning
scanning
Hot Temperature

Keywords

  • Alternating current
  • Hot-wire
  • Phase lag
  • Thermal anemometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Chung, W. S., Kwon, O. M., Choi, D. S., Park, S., Choi, Y. K., & Lee, J. S. (2004). Tunable AC thermal anemometry. Superlattices and Microstructures, 35(3-6), 325-338. https://doi.org/10.1016/j.spmi.2004.02.026

Tunable AC thermal anemometry. / Chung, Won Seok; Kwon, Oh Myoung; Choi, Du Seon; Park, Seungho; Choi, Young Ki; Lee, Joon Sik.

In: Superlattices and Microstructures, Vol. 35, No. 3-6, 01.03.2004, p. 325-338.

Research output: Contribution to journalArticle

Chung, WS, Kwon, OM, Choi, DS, Park, S, Choi, YK & Lee, JS 2004, 'Tunable AC thermal anemometry', Superlattices and Microstructures, vol. 35, no. 3-6, pp. 325-338. https://doi.org/10.1016/j.spmi.2004.02.026
Chung WS, Kwon OM, Choi DS, Park S, Choi YK, Lee JS. Tunable AC thermal anemometry. Superlattices and Microstructures. 2004 Mar 1;35(3-6):325-338. https://doi.org/10.1016/j.spmi.2004.02.026
Chung, Won Seok ; Kwon, Oh Myoung ; Choi, Du Seon ; Park, Seungho ; Choi, Young Ki ; Lee, Joon Sik. / Tunable AC thermal anemometry. In: Superlattices and Microstructures. 2004 ; Vol. 35, No. 3-6. pp. 325-338.
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