Bubble visualization in a simulated hydraulic jump
Adam Witt, John Gulliver, Lian Shen
TL;DR
This paper presents CFD simulations of a hydraulic jump to analyze air entrainment, bubble size, and void fraction, using OpenFOAM with a Volume of Fluid method and turbulence modeling.
Contribution
It introduces a detailed CFD approach to model bubble behavior and void fraction in transient hydraulic jumps, which is novel in fluid dynamics visualization.
Findings
Air entrainment characteristics are visualized.
Bubble size distribution is analyzed.
Void fraction modeling is demonstrated.
Abstract
This is a fluid dynamics video of two- and three-dimensional computational fluid dynamics simulations carried out at St. Anthony Falls Laboratory. A transient hydraulic jump is simulated using OpenFOAM, an open source numerical solver. A Volume of Fluid numerical method is employed with a realizable k-epsilon turbulence model. The goal of this research is to model the void fraction and bubble size in a transient hydraulic jump. This fluid dynamics video depicts the air entrainment characteristics and bubble behavior within a hydraulic jump of Froude number 4.82.
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Taxonomy
TopicsHydraulic flow and structures · Hydrology and Sediment Transport Processes · Hydraulic and Pneumatic Systems