MATEC Web Conf.
Volume 115, 2017XXXIII Siberian Thermophysical Seminar (STS-33)
|Number of page(s)||4|
|Section||Chapter 5 Heat and mass transfer in multiphase flows|
|Published online||10 July 2017|
Wall shear stress from a single almost spherical and a Taylor bubbles in laminar upward tube flow
Kutateladze Institute of Thermophysics, Pr. Ac. Lavrentev, 1, 630090 Novosibirsk, Russia
* Corresponding author: email@example.com
An experimental electrodiffusional technique with eight double probes is used to detect perturbation the wall shear stress caused by a single bubble in laminar upward tube flow. A small almost spherical and different length Taylor bubbles are considered. The shear stress perturbations by bubbles have a complex structure. It is possible to define three components of perturbation caused by a small bubble. The perturbation by Taylor bubble contains only two components due to the main flow symmetry around the bubble. An unexpectedly long shear stress pulsations zone is registered behind the bubbles.
© The Authors, published by EDP Sciences, 2017
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