TITLE:
Fluid Vibration Induced in T-Junction with Double Side Branches
AUTHORS:
Ryuhei Yamaguchi, Gaku Tanaka, Hao Liu, Toshiyuki Hayase
KEYWORDS:
Fluid Vibration, Flow Instability, Shear Rate, Double T-Junction, Particle Image Velocimetry, Laser Doppler Anemometry
JOURNAL NAME:
World Journal of Mechanics,
Vol.6 No.4,
April
29,
2016
ABSTRACT: A T-junction is a fundamental fluid element prevalent in pipe networks of
water supplies and power plants. In the present study, a double T-junction was
investigated for flow instability and fluid vibration. Both axi-aligned and skewed double T-junctions are examined from viewpoint of flow instability. With
single-phase flow in an open-ended double T-junction, fluid vibration is induced
in both side branches because of a high shear rate with a point of inflection.
The frequency of vibration in the downstream branch is higher than that in the
upstream branch. Except for the upstream branch in the skewed double
T-junction, the frequency is higher than that in a single T-junction. The fluid
vibrations are closely associated with the fluid interference created by the
presence of the two side branches.