Large eddy simulation of passive scalar transport in a high Schmidt number turbulent incompressible wake with experimental validation

2015 ◽  
Vol 137 ◽  
pp. 862-874 ◽  
Author(s):  
Katrine M. Jansen ◽  
Bo Kong ◽  
Rodney O. Fox ◽  
James C. Hill ◽  
Michael G. Olsen
Keyword(s):  
Large Eddy Simulation ◽  
Experimental Validation ◽  
Schmidt Number ◽  
Passive Scalar ◽  
Scalar Transport ◽  
Eddy Simulation ◽  
High Schmidt Number ◽  
Passive Scalar Transport ◽  
Large Eddy

Numerical Investigations of Passive Scalar Transport in Turbulent Taylor-Couette Flows: Large Eddy Simulation Versus Direct Numerical Simulations

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
Yacine Salhi ◽  
El-Khider Si-Ahmed ◽  
Gérard Degrez ◽  
Jack Legrand
Keyword(s):  
Finite Element ◽  
Large Eddy Simulation ◽  
Numerical Simulations ◽  
Passive Scalar ◽  
Direct Numerical Simulations ◽  
Scalar Transport ◽  
Eddy Simulation ◽  
Passive Scalar Transport ◽  
Large Eddy ◽  
Spectral Finite Element

The highly turbulent flow occurring inside (electro)chemical reactors requires accurate simulation of scalar mixing if computational fluid dynamics (CFD) methods are to be used with confidence in design. This has motivated the present paper, which describes the implementation of a passive scalar transport equation into a hybrid spectral/finite-element code. Direct numerical simulations (DNS) and large eddy simulation (LES) were performed to study the effects of gravitational and centrifugal potentials on the stability of incom-pressible Taylor-Couette flow. The flow is confined between two concentric cylinders with an inner rotating cylinder while the outer one is at rest. The Navier-Stokes equations with the uncoupled convection–diffusion–reaction (CDR) equation are solved using a code named spectral/finite element large eddy simulations (SFELES) which is based on spectral development in one direction combined with a finite element discretization in the remaining directions. The performance of the LES code is validated with published DNS data for channel flow. Velocity and scalar statistics showed good agreement between the current LES predictions and DNS data. Special attention was given to the flow field, in the vicinity of Reynolds number of 68.2 with radii ratio of 0.5. The effect of Sc on the concentration peak is pointed out while the magnitude of heat transfer shows a dependence of the Prandtl number with an exponent of 0.375.

Large-eddy simulation of high-Schmidt number mass transfer in a turbulent channel flow

1997 ◽  
Vol 9 (2) ◽  
pp. 438-455 ◽  
Author(s):  
Isabelle Calmet ◽  
Jacques Magnaudet
Keyword(s):  
Mass Transfer ◽  
Large Eddy Simulation ◽  
Channel Flow ◽  
Schmidt Number ◽  
Turbulent Channel Flow ◽  
Eddy Simulation ◽  
High Schmidt Number ◽  
Large Eddy

Immersed Boundary Method for Large Eddy Simulation and Lagrangian Stochastic Modeling of Passive Scalar Dispersion Downstream of an Obstacle

2010 ◽  
Author(s):  
C. Le Ribault ◽  
S. Simoe¨ns
Keyword(s):  
Large Eddy Simulation ◽  
Immersed Boundary Method ◽  
Passive Scalar ◽  
Immersed Boundary ◽  
Two Dimensional ◽  
Scalar Dispersion ◽  
Eddy Simulation ◽  
Boundary Method ◽  
Passive Scalar Transport ◽  
Large Eddy

A large-eddy simulation (LES) using the atmospheric code ARPS is performed to study the passive scalar dispersion downstream of an obstacle. An immersed boundary method has been introduced to take into account the obstacle. To simulate the scalar dispersion, instead of resolving the passive scalar transport equation, fluid particles containing scalar are tracked in a Lagrangian way. The results of the LES are compared with the experiments of Vinc¸ont et al. [1]. In those experiments, simultaneous measurements of the velocity and scalar concentration fields have been made in the plume emitting from a two-dimensional line source flushed with the wall. The source is one obstacle height downstream of a two-dimensional square obstacle located on the wall of a turbulent boundary layer. Our simulations predict the qualitative and quantitative features of the experimental results.

Large eddy simulation of evolution of a passive scalar in plane jet

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 1509-1516 ◽  
Author(s):  
C. Le Ribault ◽  
S. Sarkar ◽  
S. A. Stanley
Keyword(s):  
Large Eddy Simulation ◽  
Passive Scalar ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Plane Jet

Multiscale Large Eddy Simulation of Scalar Transport in Turbulent Channel Flow

2007 ◽  
pp. 111-114
Author(s):  
C. X. Xu ◽  
Z. Y. Wang ◽  
G. X. Cui ◽  
Z. S. Zhang
Keyword(s):  
Large Eddy Simulation ◽  
Channel Flow ◽  
Turbulent Channel Flow ◽  
Scalar Transport ◽  
Eddy Simulation ◽  
Large Eddy

Large-eddy simulation of small-scale Langmuir circulation and scalar transport

2019 ◽  
Vol 885 ◽  
Author(s):  
A. E. Tejada-Martínez ◽  
A. Hafsi ◽  
C. Akan ◽  
M. Juha ◽  
F. Veron
Keyword(s):  
Large Eddy Simulation ◽  
Scalar Transport ◽  
Small Scale ◽  
Langmuir Circulation ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Image Position

Passive scalar flux footprint analysis over horizontally inhomogeneous plant canopy using large-eddy simulation

2008 ◽  
Vol 42 (21) ◽  
pp. 5446-5458 ◽  
Author(s):  
Shaolin Mao ◽  
Monique Y. Leclerc ◽  
Efstathios E. Michaelides
Keyword(s):  
Large Eddy Simulation ◽  
Passive Scalar ◽  
Plant Canopy ◽  
Scalar Flux ◽  
Flux Footprint ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Footprint Analysis ◽  
Horizontally Inhomogeneous

Large eddy simulation of a swirling transverse jet into a crossflow with investigation of scalar transport

2009 ◽  
Vol 21 (1) ◽  
pp. 015101 ◽  
Author(s):  
Jordan A. Denev ◽  
Jochen Fröhlich ◽  
Henning Bockhorn
Keyword(s):  
Large Eddy Simulation ◽  
Scalar Transport ◽  
Transverse Jet ◽  
Eddy Simulation ◽  
Large Eddy
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