A dynamically optimized finite difference scheme for Large-Eddy Simulation

A Low-dispersive Dynamic Finite Difference Scheme for Large Eddy Simulation

In the past decade, the necessity for numerical quality in Direct Numerical Simulations (DNS) and Large Eddy Simulations (LES) of turbulent flows, has been recognized by many authors among which Ghosal [1] and Chow et al. [2]. In a fully resolved DNS, the smallest resolved scales are located far into the dissipation range. The energy-content of those small scales is thus very small compared to ...

A High-order Compact Finite-difference Scheme for Large-eddy Simulation of Active Flow Control

A High-Order Finite-Volume Scheme for Large-Eddy Simulation of Turbulent Premixed Flames

A novel, parallel, high-order, central essentially non-oscillatory (CENO), cell-centered, finite-volume scheme is developed and applied to large-eddy simulation (LES) of turbulent premixed flames. The high-order CENO finite-volume scheme is applied to the solution of the Favre-filtered Navier-Stokes equations governing turbulent flows of a fully-compressible reactive mixture on three-dimensiona...

A Composite Finite Difference Scheme for Subsonic Transonic Flows (RESEARCH NOTE).

This paper presents a simple and computationally-efficient algorithm for solving steady two-dimensional subsonic and transonic compressible flow over an airfoil. This work uses an interactive viscous-inviscid solution by incorporating the viscous effects in a thin shear-layer. Boundary-layer approximation reduces the Navier-Stokes equations to a parabolic set of coupled, non-linear partial diff...

An explicit finite-difference scheme for simulation of moving particles

We present an explicit finite-difference scheme for direct simulation of the motion of solid particles in a fluid. The method is based on a second order MacCormack finite-difference solver for the flow, and Newton’s equations for the particles. The fluid is modeled with fully compressible mass and momentum balances; the technique is intended to be used at moderate particle Reynolds number. Seve...