SMOKE EXTRACTION STRATEGIES BY NUMERICAL SIMULATION

Point extraction systems fully coupled with transverse or longitudinal ventilation systems are becoming a major smoke control method. However, several questions still remain for smoke extraction strategies in the ventilation design for safety management, such as, (1) the location (spacing) of exhaust ports for smoke extraction, (2) the control method for choosing the number and locations of exhaust port openings. Using CFD studies, the following issues are clarified for the case of air (smoke) extraction in tunnels with longitudinal ventilation systems: single, large extraction port with maximized extraction air volume gives more acceptable smoke concentration layers than multiple exhaust ports. The case of multiple exhaust ports, odd numbers of openings give better performance than even numbers of openings. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1463242X
• Corporate Authors:

  ITC LTD

  PO BOX 452
  KEMPSTON, BEDFORD,   United Kingdom  MK43 9PL
• Authors:
  • OTA, Y
  • HORIUCHI, K
• Publication Date: 2004

Language

• English

Media Info

• Features: References;
• Pagination: p. 40-5
• Serial:
  • TUNNEL MANAGEMENT INTERNATIONAL
  • Volume: 7
  • Issue Number: 1
  • Publisher: ITC LTD
  • ISSN: 1463-242X

Subject/Index Terms

• TRT Terms: Design; Fires; Mathematical models; Simulation; Tunnels; Ventilation systems
• ITRD Terms: 9011: Design (overall design); 1624: Fire; 6473: Mathematical model; 9103: Simulation; 3374: Tunnel; 3392: Ventilation
• Subject Areas: Bridges and other structures; Design;

Filing Info

• Accession Number: 00974566
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jun 4 2004 12:00AM