Titlebook: Unsteady Turbulent Flow Modelling and Applications; David Roos Launchbury Book 2016 Springer Fachmedien Wiesbaden 2016 Large Eddy Simulati

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Subgrid Models,most, all models shown here are based on the eddy-viscosity assumption, ie. it is assumed that the effects of the subgrid stresses cause increased transport and dissipation and can therefore be approximated (Boussinesqapproximation, see [12]) by increasing the laminar viscosity by a turbulent counte

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Solver,on method based on the third-order Runge-Kutta scheme. It also offers the possibility of treating the viscous terms implicitly by applying a hybrid time integration scheme consisting of the Runge-Kutta and the Crank-Nicolson method (see [14]). It was shown that the solver is able to reach the predic

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Validation,ted in such a manner that different physical phenomena can be investigated. They are also cases where stationary RANS models usually give unsatisfactory results due to the inadequacy of the turbulence models.

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Conclusions, possible to simulate complex cases using the technique of large eddy simulation (LES). As a first step, the theoretical background of the LES procedure was explained. Afterwards, the turbulence models used in the context of this work are briefly described. More detailed information is given on the

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Book 2016n (LES) with heat transfer in OpenFOAM. Academic and industrial cases, ranging from flow between parallel plates to film cooling, are investigated utilising existing and newly-implemented turbulence models. Simulations using no turbulence models, i.e. under-resolved DNS (UDNS) simulations, are perfo

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