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SIAMSC
2008

Large-Eddy Simulation of Thermal Flows based on Discrete-Velocity Models

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Large-Eddy Simulation of Thermal Flows based on Discrete-Velocity Models
We derive a Godunov-type relaxation scheme for turbulent flows with heat transfer. The building block of this approach is a kinetic Boltzmann-type formulation for a model of turbulent thermal flows based on large-eddy simulation modelling. Discrete-velocity moments are taken in order to derive a relaxation system which is in turn solved by a relaxation scheme. High-order schemes are obtained by discretizing the relaxation system spatially with weighted non-oscillatory reconstruction and temporally using an implicit-explicit discretization. In the limit of small Mach and small Knudsen numbers one obtains a high-order relaxation scheme for large-eddy simulation of turbulent thermal flows. The efficiency, accuracy and high-resolution properties of the models are demonstrated in a variety of test examples. Key words. Large-eddy simulation, Discrete-velocity models, Relaxation methods, ImplicitExplicit schemes, Incompressible Navier-Stokes equations, Heat transfer. AMS subject classificatio...
Mapundi K. Banda, Mohammed Seaïd, Ioan Teleag
Added 14 Dec 2010
Updated 14 Dec 2010
Type Journal
Year 2008
Where SIAMSC
Authors Mapundi K. Banda, Mohammed Seaïd, Ioan Teleaga
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