Article: Patel, RG; Desjardins, O; Kong, B; Capecelatro, J; Fox, RO; “Verification of Eulerian-Eulerian and Eulerian-Lagrangian Simulations for Turbulent Fluid-Particle Flows”, AICHE Journal, 63 (12):5396-5412
Abstract: We present a verification study of three simulation techniques for fluid-particle flows, including an Euler-Lagrange approach (EL) inspired by Jackson’s seminal work on fluidized particles, a quadrature-based moment method based on the anisotropic Gaussian closure (AG), and the traditional two-fluid model. We perform simulations of two problems:
particles in frozen homogeneous isotropic turbulence (HIT) and cluster-induced turbulence (CIT). For verification, we evaluate various techniques for extracting statistics from EL and study the convergence properties of the three methods under grid refinement. The convergence is found to depend on the simulation method and on the problem, with CIT simulations posing fewer difficulties than HIT. Specifically, EL converges under refinement for both HIT and CIT, but statistics exhibit dependence on the postprocessing parameters. For CIT, AG produces similar results to EL. For HIT, converging both TFM and AG poses challenges. Overall, extracting converged, parameter-independent Eulerian statistics remains a challenge for all methods. (C) 2017 American Institute of Chemical Engineers
Funding Acknowledgement: U.S. National Science Foundation [CBET-1437865, CBET-1437903]; U.S. Department of Energy, National Energy Technology Laboratory (NETL) through the Ames Laboratory; U.S. Department of Energy [DE-AC02-07CH11358]
Funding Text: The authors gratefully acknowledge the financial support from the U.S. National Science Foundation under Grants CBET-1437865 and CBET-1437903. This research was also partially supported (B.K. and R.O.F.) by the U.S. Department of Energy, National Energy Technology Laboratory (NETL) through the Ames Laboratory. The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract DE-AC02-07CH11358.