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

Large-eddy simulation of turbulent flow over an array of wall-mounted cubes submerged in an emulated atmospheric boundary-layer

Turbulent flow over an array of wall-mounted cubic obstacles has been numerically investigated using large-eddy simulation. The simulations have been performed using high-performance computations with local cluster systems. The array of cubes are fully submerged in a simulated deep rough-wall atmospheric boundary-layer with high turbulence intensity characteristics of environmental turbulent fl...

Influence of Thermal Radiation Models on Prediction of Reactive Swirling Methane/Air Flame in a Model Gas Turbine Combustor

 A numerical simulation of reactive swirling methane/air non-premixed flame in a new three-dimensional model combustion chamber is carried out to assess the performance of two thermal radiation models, namely, the Discrete Transfer Radiation Model and the P-1 Model. A Finite Volume staggered grid approach is employed to solve the governing equations.The second-order upwind scheme is applied for...

Some Aspects of Numerical Studies of Turbulent Flows Using Large Eddy Simulation Technique

Some Aspects of Numerical Studies of Turbulent Flows Using Large Eddy Simulation Technique

Discrete-velocity relaxation methods for large eddy simulation

A new discrete-velocity method for the numerical solution of large eddy simulation (LES) is presented based on relaxation type formulation. The discrete-velocity equations are derived from the continuous Boltzmann equation with appropriate scaling suitable for incompressible flows. The turbulence effects are incorporated in the system by considering the Smagorinsky model. A higher-order relaxat...