Effects of coupling on turbulent gas-particle boundary layer flows at borderline volume fractions using kinetic theory

Document Type : Full Lenght Research Article


Mechanical Engineering Department., Amirkabir University of Technology, Tehran, Iran


This study is concerned with the prediction of particles’ velocity in a dilute turbulent gas-solid
boundary layer flow using a fully Eulerian two-fluid model. The closures required for equations
describing the particulate phase are derived from the kinetic theory of granular flows. Gas phase
turbulence is modeled by one-equation model and solid phase turbulence by MLH theory. Results
of one-way and two-way coupled approaches are compared with the available experimental and
numerical results. Results show that one-way coupled approach is more efficient for particulate
velocity prediction in dilute flows. But, if the gas-phase flow characteristics are desired, the twoway
coupled approach should be used. Effects of free stream velocity on the coupling are


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