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Visual study of bursting using infrared technique

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Abstract

The turbulent flow of water and high drag-reducing surfactant solution in a flume was studied experimentally. We used a new method of burst frequency detection based on visual observation of the thermal spots on the free fluid surface. An analysis and comparison with results of previous investigations is presented in this study, with a special emphasis on the connection between the bursting frequency in drag-reducing solutions and onset of drag reduction. The effect of burst damping is discussed.

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Acknowledgements

This research was supported by the Fund for Promotion of Research at Technion. A. Mosayk is supported by a joint grant from the Center for Absorbtion in Science of the Ministry of Immigrant Absorbtion and the Committee for Planning and Budgeting of the Council for Higher Education under the framework of the Kamea Program.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa, Israel

    A. Mosyak & G. Hetsroni

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  1. A. Mosyak
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  2. G. Hetsroni
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Correspondence to G. Hetsroni.

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Mosyak, A., Hetsroni, G. Visual study of bursting using infrared technique. Exp Fluids 37, 40–46 (2004). https://doi.org/10.1007/s00348-004-0782-6

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