An efficient strategy of parcel modeling for polydispersed multiphase turbulent flows

Abstract. A three-dimensional particle-laden two-phase turbulent flow by employing the Eulerian-Lagrangian method using multiphase Particle-In-Cell model is implemented to analyze the effects of parcel modeling. In order to achieve an optimal trade-off between accuracy and computational cost, a hybrid approach is proposed. This approach is a combination of two typical models: the volume fixed model, in which each parcel has the same volume, and the number fixed model, in which each parcel has the same number of particles. This approach is studied for the particle-laden turbulent flow benchmark case of Boreé et al. [1], with a mass loading of 22%, by using large eddy simulation through a two-way coupling between continuous and polydispersed phases.

[1]  X. Bai,et al.  CFD modeling of biomass combustion and gasification in fluidized bed reactors using a distribution kernel method , 2022, Combustion and Flame.

[2]  S. Sahu,et al.  Effect of co-flow velocity ratio on evolution of poly-disperse particles in coaxial turbulent jets: A large-eddy simulation study , 2020 .

[3]  A. Masri,et al.  Large eddy simulation of polydispersed inertial particles using two-way coupled PDF-PBE , 2020 .

[4]  D. Tafti,et al.  Revised partial coupling in fluid–particulate systems , 2018, The Journal of Computational Multiphase Flows.

[5]  Christoph Kratzsch,et al.  Assessment of particle-tracking models for dispersed particle-laden flows implemented in OpenFOAM and ANSYS FLUENT , 2016 .

[6]  Masaya Muto,et al.  Effects of parcel modeling on particle dispersion and interphase transfers in a turbulent mixing layer , 2015 .

[7]  S. Subramaniam.  Lagrangian-Eulerian methods for multiphase flows , 2013 .

[8]  A. Berrouk.  Stochastic Large Eddy Simulation of an Axisymmetrical Confined-Bluff-Body Particle-Laden Turbulent Flow , 2013 .

[9]  J. Borée,et al.  The effect of mass loading and inter-particle collisions on the development of the polydispersed two-phase flow downstream of a confined bluff body , 2001, Journal of Fluid Mechanics.

[10]  J. Riley,et al.  Equation of motion for a small rigid sphere in a nonuniform flow , 1983 .

[11]  C. Crowe,et al.  The Particle-Source-In Cell (PSI-CELL) Model for Gas-Droplet Flows , 1977 .

[12]  Pierre Sagaut.  Large Eddy Simulation for Incompressible Flows. An Introduction , 2001 .

[13]  A. B. Basset.  On the Motion of a Sphere in a Viscous Liquid , 1887 .