Search
Results
-
-
High-order Semi-Lagrangian Numerical Method for the Large-Eddy Simulation of Reactive Flows
(2011)A high-order Semi-Lagrangian numerical method is developed for the simulation of a subsonic methane/air flame. The fluid is described by the Navier-Stokes equations for a mixture of ideal gases. Turbulence is modeled using Large-Eddy simulation (LES) together with a transport equation for the subgrid kinetic energy. For the chemical reactions we use an unsteady flamelet model based on transport equations for the mixture fraction and a ...Presentation -
-
Modelling of circuit breakers and the analysis of numerical schemes
(2011)The main function of a circuit breaker is to switch off the electric current safely, in case of fault current. A mechanical force separates the contacts, and an arc starts to burn between the two contacts. This plasma is described by the resistive Magnetohydrodynamics (MHD) equations. The emphasis is on very high currents (10kA-200kA) and relatively high conductivity. Radiation is incorporated by adding a Stefan's radiation. To simulate ...Presentation