Scipediacontent: Scipediacontent moved page Draft Content 905894656 to Oshima Kim 2021a

2021-03-11T16:14:11Z

Scipediacontent moved page Draft Content 905894656 to Oshima Kim 2021a

Scipediacontent: Created page with "== Abstract == Air lubrication systems for underwater applications have gained great popularity in recent years. Large bubbles, around We ≥ 100, show a large area of drag r..."

2021-03-11T16:14:08Z

Created page with "== Abstract == Air lubrication systems for underwater applications have gained great popularity in recent years. Large bubbles, around We ≥ 100, show a large area of drag r..."

New page

== Abstract ==

Air lubrication systems for underwater applications have gained great popularity in
recent years. Large bubbles, around We ≥ 100, show a large area of drag reduction than a
small and microbubble, especially for large scale flow problems such as ship surface.
However, it is hard to maintain their shape and prone to deform in a turbulent flow. In order
to understand and control the drag reduction mechanism by the large bubble injection, it is
necessary to know the behavior of large bubbles in the turbulent boundary layer and their
interaction with the skin friction. In this study, a solver “interIsoFoam” for two-phase flow of
an open-license software “OpenFOAM” is applied for an LES of turbulent channel flow with
a large bubble, the gas-liquid interface of which is directly captured by improved VOF
method. In a recent publication [1], we presented the numerical procedure of how to inject the
large bubble on turbulent channel flow. The research objectives in this study are investigation
on flow change of the horizontal channel flow included large bubble. From this observation,
understanding large bubbles characteristic such as the surrounding flow phenomena was
observed.

== Full document ==
<pdf>Media:Draft_Content_905894656p3091.pdf</pdf>

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Oshima Kim 2021a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 905894656 to Oshima Kim 2021a

Scipediacontent: Created page with "== Abstract == Air lubrication systems for underwater applications have gained great popularity in recent years. Large bubbles, around We ≥ 100, show a large area of drag r..."