Document Type
Article
Publication Date
1-15-2010
Abstract
Hot-wire/film anemometers have been broadly used in experimental studies in fluid mechanics, acoustics, and ocean engineering. Yet, it is well known that hot-wire/film anemometers rectify the signal outputs due to the lack of sensitivity to flow direction. This main drawback, in turn, makes them less useful for diverse fluctuating flow measurements. To solve this issue, a rectification recovery method has been developed based on reconstruction of the Fourier series expansion in conjunction with signal-squaring approach. This signal recovery method was experimentally examined and proven to be successful for both conventional and microfabricated hot-wire/film anemometers. The method was further applied to dipole field measurements, with data from recovered signals perfectly matching the analytical model of the dipole field.
Recommended Citation
Yang, Yingchen, Douglas L. Jones, and Chang Liu. "Recovery of rectified signals from hot-wire/film anemometers due to flow reversal in oscillating flows." Review of Scientific Instruments 81.1 (2010): 015104. https://doi.org/10.1063/1.3277109
Publication Title
Review of Scientific Instruments
DOI
10.1063/1.3277109
Comments
© 2010 American Institute of Physics.