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Simulating the turbulent flows inside practical combustors is an important computational challenge that demands both accuracy and efficiency. In this work, a lattice Boltzmann-based large eddy simulation (LES) flow solver has been developed and validated for a non-reacting flow in an experimental swirl-stabilized combustor. Our in-house solver uses the immersed boundary method on a non-uniform Cartesian mesh to model complex geometries and the multiple-relaxation-time collision model for numerical stability. When compared to experimental data, the LES results show good agreement for mean velocity profiles. This study demonstrates the predictive capability of the lattice-Boltzmann-based LES framework for turbulent flow studies.

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Large Eddy Simulation of Turbulent Non-reacting Flow Inside a Swirl-Stabilized Combustor via Lattice Boltzmann Approach

  • 会议论文

  • 发表日期：

    2026年

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  • Alihan Atilla Cinar,
  • Burakhan Sukuroglu,
  • Ayse Gul Gungor

摘要

Simulating the turbulent flows inside practical combustors is an important computational challenge that demands both accuracy and efficiency. In this work, a lattice Boltzmann-based large eddy simulation (LES) flow solver has been developed and validated for a non-reacting flow in an experimental swirl-stabilized combustor. Our in-house solver uses the immersed boundary method on a non-uniform Cartesian mesh to model complex geometries and the multiple-relaxation-time collision model for numerical stability. When compared to experimental data, the LES results show good agreement for mean velocity profiles. This study demonstrates the predictive capability of the lattice-Boltzmann-based LES framework for turbulent flow studies.