A rig for the static calibration of constant-temperature hot wires at very low velocities

M. Heikal, A. Antoniou, T. A. Cowell

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A rig for the calibration of hot-wire anemometer probes at velocities below 1 m/s that uses a stepping motor to drive the probe at controlled velocities down the center of an enclosed channel is described. A typical calibration curve (over the range 0.02-1 m/s) displays the usual characteristics of a hot-wire probe under combined natural and forced convection. A reasonable degree of fit with an equation of the form proposed by Van der Hegge Zijnen is demonstrated. Repeated calibrations confirm the very high accuracy of the rig, which demonstrates its suitability for detailed study of this interesting flow regime as well as for straightforward calibration.

    Original languageEnglish
    Pages (from-to)221-223
    Number of pages3
    JournalExperimental Thermal and Fluid Science
    Volume1
    Issue number2
    DOIs
    Publication statusPublished - 1 Jan 1988

    Keywords

    • calibration rig
    • hot-wire probe
    • instrumentation
    • measurement techniques

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