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INTERNATIONAL JOURNAL OF c 2008 Institute for Scientific NUMERICAL ANALYSIS AND MODELING Computing and Information
 

Summary: INTERNATIONAL JOURNAL OF c 2008 Institute for Scientific
NUMERICAL ANALYSIS AND MODELING Computing and Information
Volume 5, Supp , Pages 116
A FORMULATION FOR FULLY RESOLVED SIMULATION (FRS)
OF PARTICLE-TURBULENCE INTERACTIONS IN TWO-PHASE
FLOWS
SOURABH V. APTE AND NEELESH A. PATANKAR
Abstract. A numerical formulation for fully resolved simulations of freely
moving rigid particles in turbulent flows is presented. This work builds upon
the fictitious-domain based approach for fast computation of fluid-rigid par-
ticle motion by Sharma & Patankar ([1] Ref. J. Compt. Phy., (205), 2005).
The approach avoids explicit calculation of distributed Lagrange multipliers
to impose rigid body motion and reduces the computational overhead due to
the particle-phase. Implementation of the numerical algorithm in co-located,
finite-volume-based, energy conserving fractional-step schemes on structured,
Cartesian grids is presented. The numerical approach is first validated for flow
over a fixed sphere at various Reynolds numbers and flow generated by a freely
falling sphere under gravity. Grid and time-step convergence studies are per-
formed to evaluate the accuracy of the approach. Finally, simulation of 125
cubical particles in a decaying isotropic turbulent flow is performed to study

  

Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University

 

Collections: Engineering