FRONTIERS IN COMPUTATIONAL ASTROPHYSICS

Particle and Flames in Radiative and Magnetic Flows

October 11-15, 2010
Lyon, France

Contribution of A. Khokhlov

Title

Interplay of chemistry and fluid dynamics in detonation waves

Topics

Explosive fate of stars

Keywords

Abstract

Interaction of temperature-dependent exothermic reactions and fluid-dynamic perturbations in reacting matter is a key process which controlls initiation, propagation, and decay of detonation waves. It affects energy generation, nucleosynthesis, and observational properties of Type Ia supernovae. In terrestial conditions, detonation is a safety issue in many industrial and energy production settings. I will describe a parallel numerical approach for first-principles simulations of high-speed combustion and detonation in reactive gases. Second part of the talk will focus specifically on new results on stability and propagation of detonation waves in a degenerate carbon-oxygen in Type Ia supernovae.