Computation of Gas-Particle Swirling Flows with a Reynolds Stress Model.

The unstable spectrum of swirling gas flows

The asymptotic structure of the discrete spectrum of a compressible inviscid swirling flow with arbitrary radial distributions of density, pressure and velocity is described for disturbances with large wavenumbers. It is shown that discrete eigenmodes are unstable when a criterion derived by Eckhoff & Storesletten (1978) is satisfied. In general, these modes are characterized by a length scale ...

Numerical Simulation of a Confined Swirling Flow in a Model Gas Turbine Combustor

Discrete Particle Simulation of Gas-Solid Two-Phase Flows with Multi-scale CPU-GPU Hybrid Computation

Though discrete particle simulation (DPS) has been widely used for investigating gas-solid flows from a more detailed level as compared to traditional two-fluid models (TFM), it is still seriously limited by the computational cost when large scale systems are simulated. GPUs (graphic processing units), with their massive parallel architecture and high floating point performance, provide new pos...

A Review of Reynolds Stress Models for Turbulent Shear Flows

A detailed review of recent developments in Reynolds stress modeling for incompressible turbulent shear ows is provided. The mathematical foundations of both two-equation models and full second-order closures are explored in depth. It is shown how these models can be systematically derived for two-dimensional mean turbulent ows that are close to equilibrium. A variety of examples are provided t...

Dissipative Particle Dynamics Modelling of Low Reynolds Number Incompressible Flows