To provide a theoretical basis for the flow diversion control of a bifurcate tunnel, the flow
separation characteristics and local loss model at the tunnel bifurcation were analyzed by …

In order to deeply study the local ventilation loss coefficient of the bifurcation structure in
urban traffic link tunnel, a scale 1: 50 model with bifurcation structure was designed and …

The effective interaction length of airflow (L e) is the key factor in the determination of the
distance between an air duct nozzle and the working face in dead-end tunnels. At present …

After tunnel blasting, a large amount of CO will be produced and accumulated in the dead-
end tunnel. If the ventilation discharge is not proper and the entry time into the dead-end …

The energy loss coefficient is a key parameter for tunnel ventilation design because it affects
the distribution of airflow in the case of a fire. It is critical to discover the variation of the …

The characteristics of series-flow between two consecutive tunnels with distance ranging
from 20 m to 250 m are explored by computational fluid dynamics (CFD) parametric …

The changes in the complex structural features and traffic characteristics of urban bifurcate
tunnel have led to variation in the emission of pollutants and distribution of their …

In longitudinal ventilation, circulating air is formed in portals for closely spaced twin tunnels,
which causes mixing between the polluted air exhausted from one tunnel and the fresh air …

In order to solve the technical problem that whether ventilation shafts are needed to set up or
not in upstream tunnel when the air inflow and outflow are imbalanced in the large …

We focused mainly on a uniform air flow distribution design strategy for a multi-perforated air
supply duct with a multi-blade opposed regulation damper. This design is especially …