THE AIR RESISTANCE OF TRAINS IN TUNNELS

DER LUFTWIDERSTAND DER ZUGE IM TUNNEL

At first, it is pointed out that the problem of air resistance in a tunnel, which was already investigated in the past, is gaining new importance due to the construction of high-speed lines. The air resistance in a tunnel can be directly derived from the condition of flow obtained when the train passes through the tunnel. It is shown how this condition of flow can be calculated from formulae, and an example is given to demonstrate that the calculated values are in agreement with the actual test results. Moreover, the formulae for calculating the frictional forces at the tunnel wall and the compressive and frictional forces at the train are given. The dependence of the air resistance in the tunnel on the tunnel and train parameters is explained with reference to various figures. In conclusion, mention is made of the consequences to be observed in the construction and operation of high-speed lines as a result of the high air resistance in the tunnel.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0373322X
• Corporate Authors:

  Siemens (Georg) Verlagsbuchhandlung

  Luetzowstrasse 105-196
  1 Berlin 30,   Germany 
• Authors:
  • Gackenholz, L
• Publication Date: 1974-3

Language

• German

Media Info

• Pagination: p. 79
• Serial:
  • Glasers Annalen ZEV
  • Volume: 98
  • Issue Number: 3
  • Publisher: Siemens (Georg) Verlagsbuchhandlung
  • ISSN: 0373-322X

Subject/Index Terms

• TRT Terms: Aerodynamics; Air resistance; Technology; Tunnels
• Geographic Terms: Germany
• Subject Areas: Bridges and other structures; Operations and Traffic Management; Passenger Transportation; Railroads;

Filing Info

• Accession Number: 00054720
• Record Type: Publication
• Source Agency: Glasers Annalen ZEV
• Files: TRIS
• Created Date: Jun 24 1974 12:00AM