Analysis of a Freight Pipeline System

  • T. S. Lundgren
  • Y. Zhao
Conference paper
Part of the Fluid Mechanics and its Applications book series (FMIA, volume 43)


This paper examines the aerodynamic characteristics of a freight pipeline system in which freight capsules are individually propelled by electrical motors. The fundamental difference between this system and the more extensively studied pneumatic pipeline is the different role played by aerodynamic forces. In a driven system the propelled capsules are resisted by aerodynamic forces and, in reaction, pump air through the tube. In contrast, in a pneumatic system external blowers pump air through the tubes and this provides thrust for the capsules. An incompressible transient analysis is developed to study the aerodynamics of multiple capsules in a cross linked two-bore pipeline. An aerodynamic friction coefficient is used as a cost parameter to compare the effects of capsule blockage and headway and to assess the merits of adits and vents. We conclude that optimum efficiency for off-design operation is obtained with long platoons of capsules in vented or adit connected tubes.


Aerodynamic Force Cost Parameter Headway Time Pipeline System Freight Transport 
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  1. Ampower Corporation (1984), “Pneumatic Capsule Pipeline System,” U.S. Patent No. 4,458,602.Google Scholar
  2. Bernard, K. (1993) “Eurotunnel — design and implementation” High Speed Ground Transportation Systems I: Proc. First Int. Conf. on High Speed Ground Transportation (HSGT) Systems. ed. Bondada, M.V.A. and Wayson, R.L., ASCE N.Y., 405–416.Google Scholar
  3. Fujisawa, T., Misago, T. Araki, O. & Goriki, T. (1994) “Development of Linear Tube Transportation System,” NKK Technical Review, 70, 25–32. (Available from National Technical Information System, Springfield, VA)Google Scholar
  4. Gawthorpe, R. G., Pope, C.W. & Green, R.H. (1979), “Analysis of train drag in various configurations of long tunnels,” Proc. 3rd Int. Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels, BHRA Fluid Engineering, Cranfield, Bedford, England, 257–280.Google Scholar
  5. Hammitt, A. G. (1972), “Aerodynamic Analysis of Tube Vehicle Systems,” AIAA Journal, 10, 1972, 282–290.ADSzbMATHCrossRefGoogle Scholar
  6. Henson, D.A. and Bradbury, W.M.S. (1991), “The aerodynamics of channel tunnel trains”, Int. Symp. on Aerodynamics and Ventilation of Vehicle Tunnels (7th: 1991: Brighton, England) ed. Haerter, A., 927–956. Elsevier.Google Scholar
  7. Round, G.F. & Marcu, M.I. (1987), “Pneumocapsule pipelines: Potential for North America,” J. Pipelines, 6, 221–238.Google Scholar
  8. Schlichting, H., (1979), Boundary Layer Theory, 7th edition, McGraw-Hill.Google Scholar
  9. Tsuji, Y. (1985), “Fluid Mechanics of Pneumatic Capsule Transport,” Bulk Solids Handling, 5, 653–661.Google Scholar
  10. Tsuji, Y., Morikawa, Y., and Seki, W. (1985), “Velocity Control in a Capsule Pipeline by Changing the Area of the End-Plate,” J. Pipelines, 5, 147–153.Google Scholar
  11. Lundgren, T.S. & Zhao, Y. (1997), “Aerodynamic Characteristics of an Electrically Driven Freight pipeline System,” Submitted to J. Transportation.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1998

Authors and Affiliations

  • T. S. Lundgren
    • 1
  • Y. Zhao
    • 1
  1. 1.Dept. Aerospace Engineering and MechanicsUniversity of MinnesotaMinneapolisUSA

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