Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijheatfluidflow.2006.11.005
Title: The thermal characteristics of a hot wire in a fluctuating freestream flow
Authors: Li, W.Z. 
Khoo, B.C. 
Xu, D.
Keywords: Fluctuating flow
Free stream
Hot-wire
Thermal response
Issue Date: Oct-2007
Citation: Li, W.Z., Khoo, B.C., Xu, D. (2007-10). The thermal characteristics of a hot wire in a fluctuating freestream flow. International Journal of Heat and Fluid Flow 28 (5) : 882-893. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijheatfluidflow.2006.11.005
Abstract: A two-dimensional numerical study is carried out to obtain the thermal response of a hot wire in a fluctuating freestream flow. The ranges of the parameters considered in this study are 0.025 ≤ Re ≤ 200, 0 ≤ Sc (non-dimensional frequency) ≤ 0.32 and A (dimensionless amplitude of the imposed streamwise velocity pulsation) ≤ 0.6. The results showed that for a fluctuating flow, a typical hot wire having been calibrated under imposed mean free stream condition can be employed for velocity measurement in the typical operating range of Re ≈ O(1) or smaller. The very rapid thermal response of the hot wire has enabled the faithful measurement of fluctuating velocity in the typical range of frequency of up to O(10) kHz and amplitude range of A ≤ 0.4 encountered in a turbulent flow. © 2006 Elsevier Inc. All rights reserved.
Source Title: International Journal of Heat and Fluid Flow
URI: http://scholarbank.nus.edu.sg/handle/10635/61531
ISSN: 0142727X
DOI: 10.1016/j.ijheatfluidflow.2006.11.005
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