APPLICATION OF FIELD MODEL TO TUNNEL FIRE SERVICES DESIGN ---PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPT 1988

This article illustrates how the technique of field modelling can be applied to evaluate the fire design of a tunnel. A three-dimensional simulation is performed to study the aerodynamic and smoke movement. The information of the fire-induced convective flow, temperature and smoke field achieved gives a rough estimate on the fire environment inside the tunnel at the preflashover stage. This can be used to assess the critical air velocity of a longitudinal ventilation system required in controlling 'back-layering' as well as the effectiveness of the smoke extraction system installed. Since about sixty thousand equations are solved, the computer packages developed have to be executed on a super-minicomputer. But it can be executed on smaller computer systems at the supermicro- (such as IBM80386) or mini-(such as vax/780) levels if only two-dimensional simulation is required.(a)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/094771149X
• Corporate Authors:

  BHRA, The Fluid Engineering Centre

  Cranfield, Bedfordshire,   United Kingdom 
• Authors:
  • Chow, W K
  • LEUNG, W M
• Publication Date: 1988

Language

• English

Media Info

• Pagination: p. 495-514
• Monograph Title: PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPTEMBER 1988

Subject/Index Terms

• TRT Terms: Aerodynamics; Air; Conferences; Design; Digital computers; Evaluation and assessment; Fires; Mathematical models; Prevention; Simulation; Smog; Speed; Temperature; Ventilation systems
• Uncontrolled Terms: Longitudinal
• Subject Areas: Design; Security and Emergencies;

Filing Info

• Accession Number: 00487791
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-947711-49-X
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM