Large Eddy Simulation of effectiveness of solid screen on improving natural ventilation performance in urban tunnels

2019 ◽  
Vol 86 ◽  
pp. 174-185 ◽  
Author(s):  
Yang Zhou ◽  
Yang Yang ◽  
Shucheng Jiao ◽  
Li Zhang ◽  
Chuangang Fan ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Natural Ventilation ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Ventilation Performance

Large Eddy Simulation of Single-Sided Ventilated Room With Different Location of Windows

2014 ◽  
Author(s):  
A. Idris ◽  
B. P. Huynh
Keyword(s):  
Large Eddy Simulation ◽  
Flow Pattern ◽  
Flow Rate ◽  
Natural Ventilation ◽  
Air Flow ◽  
Navier Stokes ◽  
Eddy Motion ◽  
Eddy Simulation ◽  
Continuity Equations ◽  
Large Eddy

The natural ventilation contributes the improvement of internal thermal comfort and internal air quality when applied properly. An investigation of single-sided double opening was performed to a 3-dimensional rectangular-box room using a commercial Computational Fluid Dynamics (CFD) software package of ESI group. Sixteen models with different location of double-openings were investigated. The large eddy simulation (LES) turbulence model was used to predict the air’s flow rate and air flow pattern. The governing equations for large eddy motion was obtained by filtering the Navier-Stokes and continuity equations. From the overall results, the lowest and the highest air flow rates were obtained to be 1.14 × 10−3 m3/s and 2.12 × 100 m3/s respectively. The location & arrangement of opening influences the air flow rate and air flow pattern.

Large Eddy Simulation of Buoyancy-Driven Natural Ventilation - Twin-Plume Flow

2013 ◽  
Vol 11 (4) ◽  
pp. 353-366 ◽  
Author(s):  
Faisal Durrani ◽  
Malcolm J. Cook ◽  
James J. Mcguirk ◽  
Nigel B. Kaye
Keyword(s):  
Large Eddy Simulation ◽  
Natural Ventilation ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Plume Flow
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