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https://doi.org/10.1088/0957-0233/10/3/009
DC Field | Value | |
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dc.title | The dynamic response of a hot-wire anemometer: III. Voltage-perturbation versus velocity-perturbation testing for near-wall hot-wire/film probes | |
dc.contributor.author | Khoo, B.C. | |
dc.contributor.author | Chew, Y.T. | |
dc.contributor.author | Teo, C.J. | |
dc.contributor.author | Lim, C.P. | |
dc.date.accessioned | 2014-10-16T03:08:35Z | |
dc.date.available | 2014-10-16T03:08:35Z | |
dc.date.issued | 1999-03 | |
dc.identifier.citation | Khoo, B.C., Chew, Y.T., Teo, C.J., Lim, C.P. (1999-03). The dynamic response of a hot-wire anemometer: III. Voltage-perturbation versus velocity-perturbation testing for near-wall hot-wire/film probes. Measurement Science and Technology 10 (3) : 152-169. ScholarBank@NUS Repository. https://doi.org/10.1088/0957-0233/10/3/009 | |
dc.identifier.issn | 09570233 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/92797 | |
dc.description.abstract | Experiments were performed for the first time using the electronic square-wave voltage-perturbation test to systematically quantify the frequency response (fS) of near-wall hot-wire probes subjected in turn to varying magnitudes of convective velocity, different substrate materials and changes in wall-substrate temperature. In addition, quartz-substrate hot-film gauges with various thicknesses of quartz coating were also tested. Results of fS were compared against the dynamic frequency response (fD) previously obtained in parts I and II using a known near-wall fluctuating flow field. Although the observed trends for fD and fS were similar, their magnitudes were vastly different, notably for the commercially available hot-film gauges, or which fS was up to five orders of magnitude greater than fD. This signifies that there are possibly inherent differences between square-wave voltage-perturbation and velocity-perturbation tests for quantifying the frequency response of a hot-wire/hot-film system. These differences are then analysed in relation to the equation of a CTA unit put forth by Freymuth. | |
dc.source | Scopus | |
dc.subject | Dynamic response | |
dc.subject | Flush-mounted hot wire | |
dc.subject | Hot-film wall shear-stress gauge | |
dc.subject | Near-wall hot wire | |
dc.subject | Square-wave test | |
dc.type | Article | |
dc.contributor.department | MECHANICAL & PRODUCTION ENGINEERING | |
dc.description.doi | 10.1088/0957-0233/10/3/009 | |
dc.description.sourcetitle | Measurement Science and Technology | |
dc.description.volume | 10 | |
dc.description.issue | 3 | |
dc.description.page | 152-169 | |
dc.description.coden | MSTCE | |
dc.identifier.isiut | 000079064900009 | |
Appears in Collections: | Staff Publications |
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