Development of Mutation++: Multicomponent Thermodynamic and Transport Properties for Ionized Plasmas written in C++
Speaker: J.B. Scoggins, von Karman Institute for Fluid Dynamics
Presentation
Abstract
The development of the Mutation++ library is described which has been designed to compute thermodynamic and transport properties of ionized gases including equilibrium compositions and species production rates due to finite-rate elementary reactions.Thermodynamic properties are obtained from three separate databases: the NASA 7- and 9-coefficient polynomials and a custom database which describes each atom and molecule as a rigid-rotator and harmonic oscillator. Mixture thermodynamic properties are suitably formulated from species quantities. Transport properties are derived from kinetic theory which provides relationships for macroscopic transport coefficients based on microscopic collision integrals. The chemical production rates for species based on elementary chemical reactions including third body reactions is detailed. In addition, a new module providing atomic line spectra and statistical narrow-band model parameters for gas molecules is outlined and its application to radiative transfer calculations in atmospheric entry environments is discussed.
Biography
J.B. Scoggins is a third year Ph.D. student at the von Karman Institute for Fluid Dynamics (VKI), working on developing numerical methods to study coupled flow/radiation/ablation phenomena for planetary entry flows. He will receive his Ph.D. jointly from VKI and the EM2C laboratory at Ecole Centrale in Paris. J.B. earned his B.S. and M.S. in Aerospace Engineering from North Carolina State University. He has also spent several summers working with Nagi Mansour at NASA ARC working on heterogeneous chemistry for ablation applications as well as reduced radiation modeling applied to arc jet constrictor simulations.