DOUBLE TRACK POROSITY TESTING

The Subway Environmental Research Project (SERP) was undertaken in order to provide the subway design engineer with a basic understanding of the effects of various design parameters on subway aerodynamics and thermodynamics (and hence on the subway environment). Such understanding permits subway design with an eye toward efficient environmental control. In Phase II of the SERP, a test matrix designed to study the effects of center wall porosity (in a dual-track tunnel) on train drag and far-field air velocity was performed in the DSI SAT-DT facility. Additional testing in the SAT-DT facility was proposed (and conducted) in an attempt to discover the center wall porosity at which system performance nears that of a single tunnel (i.e., solid center wall). The purpose of this report is to describe the results of this additional testing, and to relate these results to those obtained during the original program.

  • Corporate Authors:

    Transit Development Corporation, Incorporated

    1730 M Street, NW, Suite 911
    Washington, DC  USA  20036

    Urban Mass Transportation Administration

    Office of Research, Development and Demonstration
    Washington, DC  USA  20590

    Developmental Sciences, Incorporated

    Aerospace Technology Division
    City of Industry, CA  USA 

    Associated Engineers/A Joint Venture

    New York, NY  USA 
  • Publication Date: 1975-11

Media Info

  • Pagination: 35 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00136981
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: UMTA-DC-06-0010-75-4Tech. Rpt.
  • Contract Numbers: DOT-UT-290
  • Files: NTIS, TRIS, USDOT
  • Created Date: Aug 11 2003 12:00AM