The final results of an SERC/DTI-funded LINK scheme to investigate the aerodynamic
characteristics of road tunnels ventilated longitudinally by jet fans are presented. The paper …

The performance of a jet fan in a longitudinally ventilated tunnel is significantly reduced by
the proximity of wall or ceiling where important shear stress losses occur. The paper focuses …

A road tunnel ventilation system should be objectively grated taking into account both the
installation efficiency of individual fans and the interaction between adjacent fans and …

In longitudinal ventilation road tunnel systems the booster fans are mounted close to the
tunnel roof. Since velocities of the jet flow are high, the fiiction losses on the walls are an …

A computational study was carried out to investigate the aerodynamic behavior of jet fans in
a curved road tunnel and its effects on the tunnel ventilation system. It has been found that …

This paper deals with the analysis of jet fan efficiency in road tunnels. Jet fans are often used
for tunnel ventilation and due to lack of space they are commonly installed close to the wall …

This paper presents the results of a numerical investigation carried out on an alternative jet
fan, noted in literature like Banana Jet Fan, equipped with inlet/outlet silencers inclined at a …

Experimental tests have been carried out in order to acquire knowledge about the
interaction between jet fans and the resulting secondary flow in tunnels with standard …

A computational study was carried out to investigate the effects of deflected angles of jet
fans, equipped with silencers, on the tunnel ventilation system. An optimal deflected angle …

Efficient ventilation systems will contribute to maintaining air quality in the tunnel. In order to
improve ventilation performance in normal traffic condition, the 3D tunnel models were …