Large Eddy Simulation of Evolution of a Passive Scalar in Plane Jet

AIAA Journal ◽  
2001 ◽  
Vol 39 (8) ◽  
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

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

Large eddy simulation of a plane jet

1999 ◽  
Vol 11 (10) ◽  
pp. 3069-3083 ◽  
Author(s):  
C. Le Ribault ◽  
S. Sarkar ◽  
S. A. Stanley
Keyword(s):  
Large Eddy Simulation ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Plane Jet

scholarly journals Large-eddy-simulation closures of passive scalar turbulence: a systematic approach

2003 ◽  
Vol 496 ◽  
pp. 355-364 ◽  
Author(s):  
M. MARTINS AFONSO ◽  
A. CELANI ◽  
R. FESTA ◽  
A. MAZZINO
Keyword(s):  
Large Eddy Simulation ◽  
Systematic Approach ◽  
Passive Scalar ◽  
Eddy Simulation ◽  
Scalar Turbulence ◽  
Large Eddy

A large eddy simulation study to assess low-speed wind and baffle orientation effects in a water treatment sedimentation basin

2018 ◽  
Vol 2017 (2) ◽  
pp. 412-421 ◽  
Author(s):  
Danial Goodarzi ◽  
Kaveh Sookhak Lari ◽  
Abolghasem Alighardashi
Keyword(s):  
Large Eddy Simulation ◽  
Wastewater Treatment Plants ◽  
Numerical Study ◽  
Three Dimensional ◽  
Passive Scalar ◽  
Hydraulic Performance ◽  
Water And Wastewater Treatment ◽  
Particle Tracing ◽  
Eddy Simulation ◽  
Large Eddy

Abstract Hydraulic performance of clarifiers in water and wastewater treatment plants significantly affects the settling efficiency of suspended particles. Structural and ambient parameters can deteriorate this performance. Through a verified three dimensional numerical study, we evaluated hydraulic performance and settling efficiency in a rectangular clarifier with a nominal hydraulic retention time (HRT) of 1 h and options for structural baffles with angles of 20°, 30°, 45° and 70°. Large eddy simulation and Lagrangian particle tracing were used to trace particles 80 to 850 μm in diameter. A passive scalar tracer study was conducted to reveal discrepancies in nominal and real HRT. By posing a 5 m/s wind, ten different scenarios were simulated. The wind caused 17% and 6% reduction in HRT and settling efficiency, respectively. Baffles improved these indicators with the 45° baffle showing the best performance with an approximate settling efficiency of 93%. The study highlighted the importance of using baffles, in particular for small size particles for which influencing factors such as wind deteriorate their settling efficiency.

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