NDLI: LES of Particle-Laden Flow With Inter-Particle Collisions

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gorokhovski, Mikhael Chtab, Anna
Copyright Year	2003
Abstract	By analogy with kinetic approach, the gas-solid turbulent flow was considered as an ensemble of interacting both stochastic liquid and solid particles. In this way, the motion equation for the solid particle along a smoothed trajectory has been derived. To close this equation, the statistical temperature of particles has been introduced and expressed by statistical properties of turbulence. The smoothed particles dynamics was then computed along with large-eddy simulation (LES) of turbulent channel gas flow with “two-way” coupling of momentum. The calculated results are compared with the experiment of Kulick et. al. (1994) and with computation of Yamomoto et. al. (2001), where the inter-particle interaction has been simulated by hard-sphere collisions with prescribed efficiency. It has been shown that our computation with smoothed motion of particle is relatively in agreement with experiment and computations of Yamomoto et. al. (2001). At the same time, the model presented in the paper has a following advantage: it, practically, does not require an additional CPU time to account for inter-particle interactions. The turbulence attenuation by particles and the preferential concentration of particles in the low-turbulence region have been shown.
Sponsorship	Fluids Engineering Division
Starting Page	379
Ending Page	383
Page Count	5
File Format	PDF
ISBN	0791837165
DOI	10.1115/IMECE2003-42663
Volume Number	Fluids Engineering
Conference Proceedings	ASME 2003 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2003-11-15
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Lagrangian tracking Boltzman equation Les Particle collision Turbulence Temperature Particle collisions Momentum Equations of motion Flow (dynamics) Collisions (physics) Large eddy simulation Computation Dynamics (mechanics) Gas flow Particulate matter Trajectories (physics)
Content Type	Text
Resource Type	Article

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