29.06.2026 - 12:33:58

29-6-2026

Carrier-phase DNS of iron particle cloud combustion in a highly turbulent shear layer

Our team's latest paper on Carrier-Phase Direct Numerical Simulations (CP-DNS) establishes a new benchmark by delivering the most highly resolved simulation of iron particle combustion to date.
The simulations reveal new insights into the effects of turbulence on the combustion process. High turbulence is shown to drive a broader ignition zone and accelerate fuel conversion rates. However, this acceleration happens because macro-scale turbulence enhances gas-phase oxygen transport and entrainment, rather than altering localized particle-scale interactions. This points to a "weak coupling" between the gas-phase turbulence and the oxidation behavior of individual particles.
To ensure the reliability of these DNS datasets, the study also achieves the first-ever deterministic cross-validation of a reactive turbulent shear layer. This was accomplished by statistically and directly comparing the instantaneous flow realizations of two separate DNS datasets obtained using two different codes.