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Combined hot-wire and PIV measurements of a swirling turbulent flow at the exit of a 90° pipe bend

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Abstract

Measurements of turbulent swirling flow by means of hot-wire anemometry and stereoscopic particle image velocimetry were performed, 0.67 pipe diameters downstream a 90° pipe bend. The flow for a wide range of swirl numbers up to \(S=1.2\), based on the angular velocity of the pipe wall and bulk velocity, was investigated and compared to the non-swirling case. The limitations and advantages of using a single hot-wire probe in a highly complex flow field are investigated and discussed. The present paper makes available a unique database for a kind of flow that has been neglected in literature and which is believed to be useful for validation purposes for the computational fluid dynamics community.

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Acknowledgments

This research was done within CCGEx, a centre supported by the Swedish Energy Agency, Swedish vehicle industry and KTH.

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Authors and Affiliations

  1. KTH CCGEx - Competence Centre for Gas Exchange, SE-100 44, Stockholm, Sweden

    Athanasia Kalpakli Vester & Ramis Örlü

  2. Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SE-100 44, Stockholm, Sweden

    Athanasia Kalpakli Vester, Sohrab S. Sattarzadeh & Ramis Örlü

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  1. Athanasia Kalpakli Vester
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  2. Sohrab S. Sattarzadeh
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Correspondence to Athanasia Kalpakli Vester.

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Kalpakli Vester, A., Sattarzadeh, S.S. & Örlü, R. Combined hot-wire and PIV measurements of a swirling turbulent flow at the exit of a 90° pipe bend. J Vis 19, 261–273 (2016). https://doi.org/10.1007/s12650-015-0310-1

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