Large-Scale Simulation of Complex Flows

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Large-Scale Simulation of Complex
Flows Investigators F. Mashayek, MIE/UIC D.
Kopriva/FSU G. Lapenta/LANL Prime Grant Support
ONR, NSF
Problem Statement and Motivation
The goal of this project is to develop advanced
computational techniques for prediction of
various particle/droplet-laden turbulent flows
without or with chemical reaction. These
techniques are implemented to investigate, in
particular, liquid-fuel combustors for control of
combustion and design of advanced combustors
based on a counter-current shear concept. The
experimental components are conducted at the
University of Minnesota and the University of
Maryland.
Technical Approach
Key Achievements and Future Goals

• Turbulence modeling and simulation
• Direct numerical simulation (DNS)
• Large-eddy simulation (LES)
• Reynolds averaged Navier-Stokes (RANS)
• Droplet modeling
• Probability density function (PDF)
• Stochastic
• Combustion modeling
• PDF
• Eddy-breakup
• Flamelet
• Flow simulation
• Spectral element
• Finite volume
• Finite element

• Pioneered DNS of evaporating/reacting droplets
  in compressible flows.
• Developed a multidomain spectral element code
  for large clusters.
• Developed user-defined functions (UDFs) for
  implementation of improved models in the CFD
  package Fluent.
• Developed several new turbulence models for
  particle/droplet-laden turbulent flows.
• In the process of development of a new LES code
  with unstructured grid.
• Investigating advanced concepts for liquid fuel
  combustors based on counter-current shear flow.