TUBE VEHICLE SYSTEMS: AERODYNAMIC CHARACTERISTICS

The study presents the results of an investigation of the dependence of the drag forces exerted on vehicles having the shape of a cylinder with streamlined nose and conical tail, moving coaxially with uniform linear relatively low velocity in solid wall tubes of finite length, on the velocity of approach ratio, defined as the ratio of the relative velocity of the induced fluid pushed ahead of the vehicle to the absolute velocity of the vehicle. A theoretical analysis was carried out by dividing the fluid flow about the vehicle into two regions; i.e., near and far flow regions. The flow regions were matched together by the condition that the pressures are continuous at the boundaries. An experimental investigation was conducted employing a vertical acrylic test tube, 25 feet high and 1.732 inch inside diameter. The tube was provided with water flow of different negative and positive pressure gradients. Vehicle drop tests were then conducted.

• Corporate Authors:

  Carnegie Mellon University

  Transportation Research Institute
  Pittsburgh, PA  United States  15213
• Authors:
  • Gouse, SWJ
  • Wali, E I
• Publication Date: 1971-10

Media Info

• Pagination: 157 p.

Subject/Index Terms

• TRT Terms: Aerodynamics; Cylindrical bodies; Drag; Flow fields; Fluid dynamics; Intelligent transportation systems; Mathematical models; Passenger transportation; Pneumatic conveyors; Streamlining; Tubing; Urban transportation; Vehicular tunnels; Water tunnels
• Uncontrolled Terms: Model tests
• Geographic Terms: Pittsburgh (Pennsylvania)
• Old TRIS Terms: Advanced systems; Tube systems; Tube transit systems; Tube vehicles
• Subject Areas: Operations and Traffic Management; Passenger Transportation; Railroads;

Filing Info

• Accession Number: 00039834
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rpt
• Contract Numbers: DOT-UT-237,, DOT-FR-00007
• Files: TRIS
• Created Date: Mar 9 1973 12:00AM