DocumentCode
1523966
Title
Thermal flow measurements at Gr/Re2≫1 by silicon anemometry
Author
Van Putten, Michael J A M ; Van Putten, Maurice H P M ; Van Putten, Anton F P
Author_Institution
Fac. of Appl. Phys., Delft Univ. of Technol., Netherlands
Volume
48
Issue
3
fYear
1999
fDate
6/1/1999 12:00:00 AM
Firstpage
724
Lastpage
729
Abstract
We present the first characteristics of air flow measurements in the mixed convective region with strong buoyancy effects (Gr/Re2 ≫1), using a thermal silicon double-Wheatstone-bridge vector sensor. The alternating direction method is applied to eliminate additive drift influences. The upper limit on the mixed convective region is experimentally defined to be given by Gr/Re2=[0.3-0.8]. Flow velocity measurements of down to 1 mm/s (Reynolds ≈ 0.3) are realized with an accuracy better than 98%
Keywords
anemometers; anemometry; bridge circuits; elemental semiconductors; forced convection; natural convection; silicon; Si; additive drift influences; air flow measurements; alternating direction method; double-Wheatstone-bridge vector sensor; flow velocity measurements; forced convection; mixed convective region; natural convection contribution; silicon anemometry; strong buoyancy effects; thermal flow measurements; thermal sensor; upper limit; Bridge circuits; Fluid flow measurement; Force measurement; Sensor phenomena and characterization; Silicon; Temperature distribution; Temperature sensors; Thermal force; Thermal sensors; Velocity measurement;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.772208
Filename
772208
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