Tunable AC thermal anemometry

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

doi:10.1016/j.spmi.2004.02.026

Tunable AC thermal anemometry

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

Research output: Contribution to journal › Conference article › peer-review

9 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 language	English
Pages (from-to)	325-338
Number of pages	14
Journal	Superlattices and Microstructures
Volume	35
Issue number	3-6
DOIs	https://doi.org/10.1016/j.spmi.2004.02.026
Publication status	Published - 2004 Mar
Event	Eurotherm 75: Microscale Heat Transfer 2 - Reims, France Duration: 2003 Jul 8 → 2003 Jul 10

Bibliographical note

Funding Information:
The authors gratefully acknowledge the support from the Korea Institute of Machinery and Materials.

Keywords

Alternating current
Hot-wire
Phase lag
Thermal anemometry

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.spmi.2004.02.026

Cite this

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title = "Tunable AC thermal anemometry",

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.",

keywords = "Alternating current, Hot-wire, Phase lag, Thermal anemometry",

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

note = "Funding Information: The authors gratefully acknowledge the support from the Korea Institute of Machinery and Materials.; Eurotherm 75: Microscale Heat Transfer 2 ; Conference date: 08-07-2003 Through 10-07-2003",

year = "2004",

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doi = "10.1016/j.spmi.2004.02.026",

language = "English",

volume = "35",

pages = "325--338",

journal = "Superlattices and Microstructures",

issn = "0749-6036",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Tunable AC thermal anemometry

AU - Chung, Won Seok

AU - Kwon, Ohmyoung

AU - Choi, Du Seon

AU - Park, Seungho

AU - Choi, Young Ki

AU - Lee, Joon Sik

N1 - Funding Information: The authors gratefully acknowledge the support from the Korea Institute of Machinery and Materials.

PY - 2004/3

Y1 - 2004/3

N2 - 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.

AB - 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.

KW - Alternating current

KW - Hot-wire

KW - Phase lag

KW - Thermal anemometry

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U2 - 10.1016/j.spmi.2004.02.026

DO - 10.1016/j.spmi.2004.02.026

M3 - Conference article

AN - SCOPUS:4243179059

SN - 0749-6036

VL - 35

SP - 325

EP - 338

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 3-6

T2 - Eurotherm 75: Microscale Heat Transfer 2

Y2 - 8 July 2003 through 10 July 2003

ER -

Tunable AC thermal anemometry

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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