Split-Film Anemometer Sensors for Three-Dimensional Velocity-Vector Measurement

Olin, John G.; Kiland, R. B.

doi:10.1007/978-1-4684-8346-8_5

Cited by 9 publications

(4 citation statements)

References 1 publication

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“…The use of a split-film probe for accurate measurements both in air and in liquid is a very difficult and time-consuming task, as outlined by Bruun (1995) and also observed extensively in our kerosene/water-flow investigation. Details of the operational principle of the split-fibre anemometer sensor developed by TSI were first reported by Olin and Kiland (1970). The sensor has the same physical characteristics as the corresponding cylindrical hot-film probe, except that the thin platinum film (1000 Å thick) is split longitudinally into two separate sensor elements running the length of the same quartz cylinder.…”

Section: The Calibration Of a Sf Hot-film Probementioning

confidence: 99%

A comparative study of single normal, X type and split-film anemometer probe measurements in kerosene/water two-phase flow

Al-Deen¹,

Bruun²

1997

Meas. Sci. Technol.

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This paper describes the use of hot-film anemometry in two-phase liquid - liquid flows with particular reference to kerosene/water flows. The origin of this research work was an experimental study of `bubbly' kerosene/water two-phase flow in a vertical pipe, in which detailed flow information was required for the continuous water phase. A detailed study was carried out to identify (i) the optimized fluid-flow conditions for hot-film measurements in kerosene/water flows, (ii) accurate long-term stable calibration procedures and (iii) two-phase flow-measurement techniques for identifying the bubble (or droplet) part and the continuous phase part of the hot-film signal. Computer-based calibration and related signal analysis procedures have been developed and implemented for single normal (SN), X array and split-fibre (SF) hot-film probes. An outline of the methodology is given for each technique. The compatability of the three hot-film probe techniques was demonstrated by comparative volume fraction and continuous phase measurements in kerosene/water flow for the volume fraction, , range 5 - 40%.

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Section: The Calibration Of a Sf Hot-film Probementioning

confidence: 99%

A comparative study of single normal, X type and split-film anemometer probe measurements in kerosene/water two-phase flow

Al-Deen¹,

Bruun²

1997

Meas. Sci. Technol.

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“…Details of the operational principle of the SF anemometer sensor developed by TSI were first reported by Olin and Kiland (1970). The sensor has the same physical characteristics as the corresponding cylindrical hot-film probe, except that the thin platinum film (1000 Å thick) is split longitudinally into two separate sensor elements (see figure 7).…”

Section: Split-film Probementioning

confidence: 99%

Hot-film anemometry in liquid flows

Bruun¹

1996

Meas. Sci. Technol.

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This review article deals with practical aspects of hot-film anemometry in liquid flows, with particular reference to water as the liquid. The article outlines the construction and frequency response of various hot-film probe types and highlights the special precautions that need to be taken when using hot-film probes in liquids. The article describes the calibration and signal analysis procedures for single-normal, X type and split-film probes. Typical results for a vertical pipe flow demonstrate the compatibility and therefore the accuracy of the three hot-film probe techniques.Hans H Bruun was born in Copenhagen, Denmark, where he also attended the Technical Universtiy of Denmark and obtained a MSc and a PhD in Mechanical Engineering. Following an appointment as Amenuensis at the Technical University he obtained a combined NATO/British Council scholarship for a 1 year research study at the Institute of Sound and Vibration Research, Southampton. Further research appointments followed at the Universities of Southampton, Cambridge and Karlsruhe. In 1980 he joined the University of Bradford as a lecturer and was promoted to Reader in 1996. Dr Bruun has an extensive experimental research record, with significant contributions to two-phase flow, separated flow and hot-wire anemometry. The latter research area is summarized in his recent book Hot-Wire Anemometry (Oxford: University Press).

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“…The SF probe is a modification of the standard SN probe. Details of the operational principle of the SF anemometer sensor were first reported by Olin and Kiland (1970). The sensor, shown in figure 1(a) has the same physical characteristics as the corresponding 150 µm diameter cylindrical hot-film probe, except that the thin platinum film (1000 Å thick) is split longitudinally into two separate sensor elements.…”

Section: The Principle Of the Sf Probementioning

confidence: 99%