Impact of bubbly currents onto foam rafts:Imaging measurements and shallow layer model
Date Issued
2006
Date
2006
Author(s)
PAN, Yen-Tung
DOI
en-US
Abstract
The present investigation focuses on bubble currents moving along a rigid ceiling, then impacting onto a floating foam raft. This flow constitute an inverted analogue of the density currents encountered in lakes and reservoirs. Both experiments and computations are performed. In the experiments, Particle Tracking Velocimetry (PTV) is used to capture the flow field both for the fast currents and for the slow foam raft. For the computations, a new set of governing equations based on the shallow flow assumption are derived. A special feature of the equations is that they include different terms for the ceiling current and for the foam raft. The Finite Volume Method (FVM) is used to solve the equations numerically. Finally the results of the numerical computations are compared with the experimental measurements.
Subjects
氣泡流
bubbly currents
Type
thesis
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