Local flow speed measurement using tunable AC thermal anemometry

Won Seok Chung; Ohmyoung Kwon; Joon Sik Lee; Young Ki Choi; Seungho Park

doi:10.1007/BF03023904

Local flow speed measurement using tunable AC thermal anemometry

Won Seok Chung, Ohmyoung Kwon, Joon Sik Lee, Young Ki Choi, Seungho Park

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

This paper shows the results of local flow speed measurement using tunable AC thermal anemometry, which is suitable for the accurate measurement of wide range flow speed. The measurement accuracy is verified through the comparison between the measurement data and the analytic solution of the sensor temperature oscillation in stationary fluid. The relation between the phase lag and the flow speed is experimentally investigated at various conditions. The measurement sensitivity for low flow speed improves in a low frequency region and that for high flow speed improves in a high frequency region. Also, the sensitivity increases with decreasing thermal conductivity of the surrounding fluid. The local flow speed could be measured as low as 1.5mm/s and the highest measurement resolution was 0.05 mm/s in the range of 4.5~ 5.0 mm/s at 1 Hz in this experiment.

Original language	English
Pages (from-to)	1449-1459
Number of pages	11
Journal	Journal of Mechanical Science and Technology
Volume	19
Issue number	7
DOIs	https://doi.org/10.1007/BF03023904
Publication status	Published - 2005 Jul

Keywords

3ω Voltage
Flow Speed Measurement
Phase Lag
Steady Periodic Heat Transfer

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering

Access to Document

10.1007/BF03023904

Cite this

@article{4be9f43c67e049deb6a3880c9e559b7a,

title = "Local flow speed measurement using tunable AC thermal anemometry",

abstract = "This paper shows the results of local flow speed measurement using tunable AC thermal anemometry, which is suitable for the accurate measurement of wide range flow speed. The measurement accuracy is verified through the comparison between the measurement data and the analytic solution of the sensor temperature oscillation in stationary fluid. The relation between the phase lag and the flow speed is experimentally investigated at various conditions. The measurement sensitivity for low flow speed improves in a low frequency region and that for high flow speed improves in a high frequency region. Also, the sensitivity increases with decreasing thermal conductivity of the surrounding fluid. The local flow speed could be measured as low as 1.5mm/s and the highest measurement resolution was 0.05 mm/s in the range of 4.5~ 5.0 mm/s at 1 Hz in this experiment.",

keywords = "3ω Voltage, Flow Speed Measurement, Phase Lag, Steady Periodic Heat Transfer",

author = "Chung, {Won Seok} and Ohmyoung Kwon and Lee, {Joon Sik} and Choi, {Young Ki} and Seungho Park",

year = "2005",

month = jul,

doi = "10.1007/BF03023904",

language = "English",

volume = "19",

pages = "1449--1459",

journal = "Journal of Mechanical Science and Technology",

issn = "1738-494X",

number = "7",

}

TY - JOUR

T1 - Local flow speed measurement using tunable AC thermal anemometry

AU - Chung, Won Seok

AU - Kwon, Ohmyoung

AU - Lee, Joon Sik

AU - Choi, Young Ki

AU - Park, Seungho

PY - 2005/7

Y1 - 2005/7

N2 - This paper shows the results of local flow speed measurement using tunable AC thermal anemometry, which is suitable for the accurate measurement of wide range flow speed. The measurement accuracy is verified through the comparison between the measurement data and the analytic solution of the sensor temperature oscillation in stationary fluid. The relation between the phase lag and the flow speed is experimentally investigated at various conditions. The measurement sensitivity for low flow speed improves in a low frequency region and that for high flow speed improves in a high frequency region. Also, the sensitivity increases with decreasing thermal conductivity of the surrounding fluid. The local flow speed could be measured as low as 1.5mm/s and the highest measurement resolution was 0.05 mm/s in the range of 4.5~ 5.0 mm/s at 1 Hz in this experiment.

AB - This paper shows the results of local flow speed measurement using tunable AC thermal anemometry, which is suitable for the accurate measurement of wide range flow speed. The measurement accuracy is verified through the comparison between the measurement data and the analytic solution of the sensor temperature oscillation in stationary fluid. The relation between the phase lag and the flow speed is experimentally investigated at various conditions. The measurement sensitivity for low flow speed improves in a low frequency region and that for high flow speed improves in a high frequency region. Also, the sensitivity increases with decreasing thermal conductivity of the surrounding fluid. The local flow speed could be measured as low as 1.5mm/s and the highest measurement resolution was 0.05 mm/s in the range of 4.5~ 5.0 mm/s at 1 Hz in this experiment.

KW - 3ω Voltage

KW - Flow Speed Measurement

KW - Phase Lag

KW - Steady Periodic Heat Transfer

UR - http://www.scopus.com/inward/record.url?scp=33644538944&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644538944&partnerID=8YFLogxK

U2 - 10.1007/BF03023904

DO - 10.1007/BF03023904

M3 - Article

AN - SCOPUS:33644538944

SN - 1738-494X

VL - 19

SP - 1449

EP - 1459

JO - Journal of Mechanical Science and Technology

JF - Journal of Mechanical Science and Technology

IS - 7

ER -

Local flow speed measurement using tunable AC thermal anemometry

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this