Influence of the slope in the ventilation semi-transversal system of an urban tunnel

Experimental study on heat exhaust coefficient of transversal smoke extraction system in tunnel under fire

“…c o m / l o c a t e / t u s t 2010; Fan et al, 2013;Li and Chow, 2003;Lin and Chuah, 2008;Lu et al, 2013;Ni et al, 2010;Porizek et al, 2007;Rie et al, 2005;Vauquelin and Megret, 2002;Vidmar et al, 2012). Experimental study (Choi et al, 2005;Ni et al, 2010;Porizek et al, 2007;Vauquelin and Megret, 2002) and numerical simulation (Ballesteros-Tajadura et al, 2006;Colella et al, 2010;Li and Chow, 2003;Lin and Chuah, 2008;Lu et al, 2013;Rie et al, 2005;Vidmar et al, 2012) with both isothermal and thermal models were carried out to study the performance of different transversal smoke extraction systems of tunnels. Vauquelin and Megret (2002) conducted experiments in a 1:20th tunnel to investigate the influence of fire source and outlets on the exhaust coefficient.…”

“…Though the cost of transversal smoke extraction system is higher than that of longitudinal ventilation system, more and more tunnels have been designed with transversal ventilation and extraction system. Studies on transversal smoke extraction system can be found in the literatures (Ballesteros-Tajadura et al, 2006;Choi et al, 2005;Colella et …”

Auxiliary ventilation in mining roadways driven with roadheaders: Validated CFD modelling of dust behaviour

“…The Standard k-epsilon model provides better results when compared with experimental measurements. Other authors such as Norton et al (2007), Ballesteros-Tajadura et al (2006), Moloney et al (1999a), Moloney and Lowndes (1999b) and Hargreaves and Lowndes (2007) have also used the k-epsilon turbulence model to simulate the roadway flow obtaining valid results. Zhang and Chen (2006) have also obtained valid results with k-epsilon models when they have studied pollutant dust dispersion in ventilated rooms.…”

Development of a Methodology for Interface Boundary Selection in the Multiscale Road Tunnel Fire Simulations

“…One of the most common numerical approaches is computational fluid dynamics (CFD). The CFD numerical analysis is often utilized for precise studies of fluid behavior in underground space environments [3,14,41,52]. This kind of numerical analysis is common to be utilized near fire field.…”