Keywords

Rayleigh-Taylor, Turbulence, Numerical simulations, One-dimensional-turbulence model

Abstract

We study the problem of reactive Rayleigh–Taylor turbulence in the Boussinesq framework using one-dimensional-turbulence (ODT) simulations. In this problem a reaction zone between overlying heavy/cold reactants and underlying light/hot products moves against gravity. First, we show that ODT results for global quantities in non-reactive Rayleigh–Taylor turbulence are within those from direct numerical simulations (DNS). This comparison give us confidence in using ODT to study unexplored flow regimes in the reactive case. Then, we show how ODT predicts an early stage of reactive Rayleigh–Taylor turbulence that behaves similarly to the non-reactive case, as observed in previous DNS. More importantly, ODT indicates a later stage where the growth of the reaction zone reduces considerably. The present work can be seen as a step towards the study of supernova flames with ODT.

Original Publication Citation

Gonzalez-Juez, E. D., Kerstein, A. R., & Lignell, D. O. (2013). Reactive Rayleigh–Taylor turbulent mixing: a one-dimensional-turbulence study. Geophysical & Astrophysical Fluid Dynamics, 107(5), 506–525. https://doi.org/10.1080/03091929.2012.736504

Document Type

Peer-Reviewed Article

Publication Date

2012-11-19

Publisher

Taylor and Francis

Language

English

College

Ira A. Fulton College of Engineering

Department

Chemical Engineering

University Standing at Time of Publication

Full Professor

Download

Share

COinS