Work

Consistent kinetic-continuum dissociation model. II. Continuum formulation and verification

Year: 2020

Type: article

Abstract: In this article, we implement a recently developed non-equilibrium chemical kinetics model [N. Singh and T. Schwartzentruber, J. Chem. Phys. 152, 224302 (2020)] based on ab initio simulation data and perform verification studies. Direct molecular simulation data are used to verify the predictive capabilities of the model. Using the model, dominant physics, such as the need for a rotational energy equation, and the quantitative role of non-Boltzmann effects are identified. Based on the analysis and reasonable assumptions, a simplified model for implementation into large-scale computational fluid dynamic simulations is proposed. Without incurring additional computational cost, the model can be used in existing flow solvers to analyze hypersonic flows.

Source: The Journal of Chemical Physics

DOI: 10.1063/1.5142754

Authors: Narendra Singh, Thomas Schwartzentruber

Institution: University of Minnesota

Language: English

Topic: Gas Dynamics and Kinetic Theory

Subfield: Applied Mathematics

Field: Mathematics

Domain: Physical Sciences

Open Access status: green

Funders: Air Force Office of Scientific Research, Air Force Research Laboratory

Awards: G3650468659, G4027050148, G5047287852, G5126344660