For laminar flow in the side branch of a T-junction, periodic fluid vibrations occur with the Strouhal number independent of characteristic flow conditions. As the mechanics is unknown, an experiment was performed to establish the underlying cause in high-shear-rate flow. The fluid vibration appears along both the shearing separation layer and the boundary between two vortices immediately downstream of the side branch, where the shear rates are several orders larger than those further downstream. This vibration is caused by flow instability induced in two types of high-shear-rate flow confirming that is a universal phenomenon associated with the geometry of the T-junction.
Fluid Vibration Induced by High-Shear-Rate Flow in a T-Junction
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received June 20, 2015; final manuscript received February 7, 2016; published online May 2, 2016. Assoc. Editor: Mark F. Tachie.
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Tanaka, G., Yamaguchi, R., Liu, H., and Hayase, T. (May 2, 2016). "Fluid Vibration Induced by High-Shear-Rate Flow in a T-Junction." ASME. J. Fluids Eng. August 2016; 138(8): 081103. https://doi.org/10.1115/1.4032935
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