Title of article
Large Eddy Simulation of a Turbulent Flow over Circular and Mixed Staggered Tubes’ Cluster
Author/Authors
Bedrouni, M Measurement and Mechanical Simulation - University of Chlef - Algeria , Khelil, A Measurement and Mechanical Simulation - University of Chlef - Algeria , Braikia, M Measurement and Mechanical Simulation - University of Chlef - Algeria , Naji, H University of Lille, IMT Lille-Douai - France
Pages
16
From page
1471
To page
1486
Abstract
A large eddy simulation study was conducted to investigate the turbulent dynamic structure of a fluid flow in
two staggered tube configurations, one is composed of all circular cylinders and the second is composed of
circular and square cylinders. The present LES, based on the wall-adapting local eddy viscosity model, has
been conducted for ReD = 12,858, which match available experiments. The appropriate grid has been selected
using the grid convergence index method so that the wall-normal coordinate
y
value is relevant for walls.
Streamlines, turbulence kinetic energy contours, instantaneous vorticity contours computed indicate that wake
patterns are more chaotic. In addition, flow coherent eddies within both configurations are identified via the
Q -criterion. Based on the obtained findings, it can be stated that the model considered, in addition to being
physically sound, demonstrated to be suitable for simulating the turbulent flow over circular and mixed
staggered tube bundles with higher resolution
Keywords
Tube bundles , Large eddy simulation , Turbulent flow , WALE mode , GCI method , Q-criterion
Serial Year
2020
Record number
2492445
Link To Document