Tunnel ventilation design and CFD Simulation

Tunnel ventilation desin - CFD and PyroSim Simulation

ARACo

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Tunnel ventilation design and calculation by PIARC method

In recent years Contemporaneous with the advancement of technology, a special consideration need to transport infrastructure has been raised. One of the main methods of transportation is road and rail transportation. The main feature of this methods of transportation, is their generality, which requires special attention to details of design and construction.

Iran also have developed tunnel digging recently issues related to tunneling, has been of particular importance and the Resalat tunnel in Tehran, the first tunnel ventilation design project and control system was undertaken.

Design and Simulation of road / rail tunnel ventilation

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Design and Simulation of road and rail tunnel ventilation

The new drilling techniques and TBM devices has led to the possibility of digging long tunnels in less time than usual. One of the requirements of digging long tunnels, is proper ventilation. The most common method of urban tunnels ventilation is the longitudinal ventilation using jet fans.

To cause proper and healthy ventilation in tunnels, additional to equipment, correctly design and detailed calculations of pollutants and environmental conditions are needed.

In order to carry out tunnel ventilation computing feasibility studies, there are processes that must be performed on a regular basis and with a particular order. In order to basic acquaintance with tunnel ventilation calculation process, the main steps of the process, will be mentioned as followed:

Finding out technical drawings and geographical position of the tunnel

Studying the Climatic traffic characteristics of the region and view

Studying the status of pollutants produced by vehicles and analysis of traffic statistics

Calculations to determine required flow rate for ventilation in traffic and fire mode

Studying different methods of ventilation and selection of appropriate method

Flow simulation inside tunnels with Fluent, SES and flow works software

Figuring out all ventilation equipment’s on chosen method, along with Technical Specification

Araco by having the suitable knowledge, work experience in the field of tunnel ventilation and utilizing of Finite element flow simulation techniques is present to carry out projects in road and rail tunnel ventilation design with high certitude and quality.

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Tunnel ventilation design and CFD Simulation

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