Frontiers in Applied Math Colloquium I Ann Almgren, Low Mach Number Modeling

MC 5501

Speaker

Ann Almgren | Lawrence Berkeley National Lab

Title

Low Mach Number Modeling

Abstract

Low Mach number equation sets approximate the equations of motion of a compressible fluid by filtering out the sound waves, which allows the system to evolve on the advective rather than the acoustic time scale. Depending on the degree of approximation, low Mach number models retain some subset of possible compressible effects. In this talk I will discuss low Mach number models for reacting and stratified flows arising in combustion, astrophysics and atmospheric modeling.  In addition, I will discuss some of our work in designing a software framework that supports adaptive mesh refinement approaches for a variety of applications including low Mach number flows.