A disturbance corrected point-particle approach for two-way coupled particle-laden flows on arbitrary shaped grids
نویسندگان
چکیده
A general, two-way coupled, point-particle formulation that accounts for the disturbance created by dispersed particles in obtaining undisturbed fluid flow field needed accurate computation of force closure models is presented. Specifically, equations presence are first derived based on inter-phase momentum coupling a finite-volume formulation. Solution to obtained using two approaches: (i) direct velocity and pressure reaction due at computational control volumes, (ii) linearized, approximate field, specifically applicable low Reynolds number flows. In both approaches, computed used obtain necessary model aerodynamic forces particle. The approaches thoroughly evaluated single particle an unbounded wall-bounded uniform, anisotropic, as well unstructured grids show motion coupling. approach straightforward can be applied any numerical particle-laden flows including Euler-Lagrange Euler-Euler formulations.
منابع مشابه
Particle stresses in dilute, polydisperse, two-way coupled turbulent flows.
Direct numerical simulations are performed of turbulent planar Couette flow which are seeded with two-way coupled particles at low volume concentration. Based on an understanding of the development of particle stress (horizontal momentum carried vertically on average by the particle phase) in monodisperse systems at various particle Stokes numbers, several bidisperse and continuously polydisper...
متن کاملGranular and Particle-Laden Flows
This research programme at the Newton Institute was devoted to improving the understanding and mathematical modelling of granular and particle-laden fluid systems as they arise in nature, in the laboratory and in industry. Geophysical examples of granular and particle-laden flows include rock avalanches, debris flows, mud flows and turbulent boundary layers with suspended particles, such as vol...
متن کاملA tightly coupled particle–fluid model for DNA-laden flows in complex microscale geometries
We present a stable and convergent method for the computation of flows of DNA-laden fluids in microchannels with complex geometry. The numerical strategy combines a ball–rod model representation for polymers coupled tightly with a projection method for incompressible viscous flow. We use Cartesian grid embedded boundary methods to discretize the fluid equations in the presence of complex domain...
متن کاملAn Euler-Lagrange strategy for simulating particle-laden flows
In this work, a strategy capable of simulating polydisperse flows in complex geometries is employed where the fluid transport equations are solved in an Eulerian framework and the dispersed phase is represented as Lagrangian particles. Volume filtered equations for the carrier phase are derived in detail for variable density flows, and all unclosed terms are discussed. Special care is given to ...
متن کاملA Generalized Particle Search–Locate Algorithm for Arbitrary Grids
to carry out searching and interpolation efficiently. Brackbill and Ruppert [6] and Westermann [7] have designed A generalized iterative algorithm for searching and locating particles in arbitrary meshes is presented. The algorithm uses Newton schemes to perform searching and bilinear interpolation on method to invert a bijective map of the mesh elements onto a structured meshes composed of non...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Computational Physics
سال: 2021
ISSN: ['1090-2716', '0021-9991']
DOI: https://doi.org/10.1016/j.jcp.2021.110381