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Research Abstracts Online
January 2009 - March 2010

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University of Minnesota Twin Cities
Institute of Technology
Department of Aerospace Engineering and Mechanics

PI: Krishnan Mahesh, Fellow

Large-eddy Simulation of Turbulent Flow in Complex Geometries

These researchers are continuing to develop the computational capability to perform large-eddy simulation (LES) of turbulent flows in realistic engineering geometries. Large-eddy simulation is a computational approach where one filters the unsteady Navier-Stokes equations, and numerically solves for the large-scales while modeling the effect of the smaller scales that have been filtered out. LES has traditionally been restricted to simple geometries. The group uses four codes: incompressible unstructured, compressible unstructured, compressible structured, and spectral. These are written in MPI for portability and have been run on several of the supercomputers over the past years including, most recently, Blade and Calhoun.

The researchers are currently working on several projects under this broad research area: simulation of propeller crashback, simulating hypersonic turbulent flows, turbulent flows with chemical reaction, LES of compressible flows in complex geometries, simulation of cavitation, high-speed injection, and wall-modeling of high Reynolds number attached flows.

Group Members

Raja Asaithambi, Graduate Student
Xiaochuan Chai, Graduate Student
Shankar Ghosh, Research Associate
Prahladh Iyer, Graduate student
Hyunchul Jang, Graduate Student
Michael Mattson, Graduate Student
Suman Muppidi, Research Associate
Zane Nitzorski, Graduate Student
Noma Park, Research Associate
Rajes Sau, Graduate Student
Aman Verma, Graduate Student