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Research Abstracts Online
January 2008 - March 2009

University of Minnesota Twin Cities
Institute of Technology
Department of Civil Engineering
St. Anthony Falls Laboratory

PI: Charles C. S. Song

Large-scale Computation of "Large Re–Small M” Industrial and Environmental Flows

This group continued its development of large-scale flow computation methods and computer codes for scientific and engineering applications. The researchers deal with complex industrial and environmental subsonic turbulent flows. The method is based on the concept of large eddy simulation of real fluids in four-dimensional space using a finite volume approach.

Recent work has focused on developing computer codes for unsteady cavitating flows with and without ventilation. The code has been applied to simulate and help design a new Low Noise Cavitation Tunnel for the Republic of Korea. Comparison of the numerical results agreed very well with the data taken from a physical model confirming the usefulness of the code. At flow at modest Reynolds number corresponding to the physical model flow, the flow can be either laminar or turbulent depending on the initial condition assumed for the simulation. The researchers now plan to study in more detail the effect of initial and other conditions on the transitional range of Reynolds number.

Group Member

Xiang Ying Chen, Collaborator, Coral Gables, Florida