IDA Road Tunnel Ventilation is the subset
of the full suite called IDA Tunnel, a comprehensive tunnel
environment simulation software.
The first version of IDA road Tunnel Ventilation
was developed in 1995 to address the ventilation and fire
design task of the Stockholm ring road project.
Application areas
IDA Road Tunnel Ventilation calculates air pressure, flow
rates, temperature as well as CO and NO (pollution concentrations)
in complex tunnel networks.
IDA Road Tunnel Ventilation can be used for realistic studies
of phenomena associated with real traffic such as congestion,
multi-lane traffic, vehicle and slope dependent maximum speeds.
Tunnel fire scenarios can also be simulated.
IDA RTV used by leading companies
EQUAs IDA tunnel ventilation software is used by leading European
tunnel design companies such as HBI Haerter, Gruner, Halcrow,
WSP, Norconsult, Ramböll, Pöyry and Sweco and has
been applied in full scale projects since 1995.
Two examples of road tunnel design projects where this software
has been used are Södra Länken in Stockholm and
Cross City Tunnel in Sydney.
Technical facts
The program handles both longitudinally and transversally
ventilated tunnels, with possibly bi-directional multilane
traffic.
The user enters a geometrical description of the tunnel, i.e.
height coordinates and cross-sectional areas along the length
of each tunnel branch.
Other input data cover ambient conditions (including portal
wind pressure), traffic inflow, emission characteristics and
coefficients of drad and friction. PIARC and similar emission
tables are also included. Tables can be linearly combined
and scaled with suitable age, weight and other factor.
Ventilation may be longitudinal or transversal,
with air supply and exhaust terminal devices distributed along
the tunnel.
For momentum jet fans the user specifies cross-sectional area,
efficiency and air velocity.
User-specified heatflux is added in a limited
section of the tunnel to simulate tunnel fire scenarios. Models
for smoke production depending on fire type and combustion
materials are available as well as fire size limitations in
accordance to available oxygen levels. Temperature profile
into the wall and smoke radiation is modeled.
IDA Road tunnel ventilation has optional add-ins
for 3D tunnel modeling and feedback controls.
Three road traffic models are available: standing, moving
and dynamic.
IDA Tunnel simulators are also available for real-time hardware-in-the-loop
studies.
Please, contact EQUA Simulation for a web
based demo (new!), trial
version, pricing, etc.
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