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DOE OSTI · 1871437

The tracer-BHR4 model for subgrid mixing layers

Braun, Noah Oakley·Gore, Robert Allen
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Abstract

A model for the passive evolution of turbulent subgrid-scale mixing layers is developed based on the model of tracer-BHR model of Braun & Gore. The new model, tracer-BHR4, mainly differs from the previous iteration in that it aims to replicate the behavior of BHR4, instead of BHR3.1. The coefficients from BHR4 are used and a new model for mixing layer growth is developed to allow the tracer model to reproduce the de-mixing behavior seen in BHR4. Additionally, an improved timestep size controller is introduced. The new model is tested on problems containing Rayleigh-Taylor or Richtmyer-Meshkov mixing layers, and is able to reproduce the behavior of well resolved BHR4 simulations with reasonable accuracy.

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BibTeXRIS

Braun, Noah Oakley, Gore, Robert Allen. 2022-05-31. The tracer-BHR4 model for subgrid mixing layers. https://doi.org/10.2172/1871437

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