two-way coupling

Application of the exact regularized point particle method (ERPP) to particle laden turbulent shear flows in the two-way coupling regime

The Exact Regularized Point Particle method (ERPP), which is a new inter-phase momentum coupling ap- proach, is extensively used for the first time to explore the response of homogeneous shear turbulence in presence of different particle populations. Particle suspensions with different Stokes number and/or mass loading are considered. Particles with Kolmogorov Stokes number of order one suppress turbulent kinetic energy when the mass loading is increased. In contrast, heavier particles leave this observable almost un- changed with respect to the reference uncoupled case.

Application of the exact regularised point particle method (ERPP) to bubbleladen turbulent shear flows in the two-way coupling regime

Direct Numerical Simulations (DNS) of a bubbly laden homogeneous shear flow has beencarried out using the Exact Regularised Point Particle method (ERRP) as inter-phase mo-mentum coupling approach. The aim of the study consists in addressing the modulationof shear turbulence and the bubble clustering geometry in presence of different inter-phasemomentum coupling conditions. Suspensions with different combinations of void fractionand Kolmogorov-based Stokes number, in the dilute regime, have been addressed. Bubblessuppress the turbulent kinetic energy and turbulent dissipation as well.

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