A TWO-DIMENSIONAL FLUID-SUSPENSION TEST APPARATUS FOR INVESTIGATION OF PRESSURE RATIO, MACH NUMBER AND REYNOLDS NUMBER EFFECTS

The design, instrumentation and evaluation of a small scale two-dimensional test apparatus for investigating the equilibrium and nonequilibrium pressure-displacement-flow characteristics of fluid suspension sealing regions are described. The apparatus is versatile and adaptable to a wide variety of suspension configurations. Dynamic similarity to large scale devices is maintained by varying the ambient pressure level. Ambient pressures from 0.1 psia to 150 psia can be employed in the present apparatus. The system is transparent and permits flow visualization through injection of smoke into the supply flow. Data reduction is automated via direct input of raw data into an IBM 7094 digital computer. Test results are presented for equilibrium and nonequilibrium conditions for tests run at one atmosphere ambient pressure for a peripheral jet suspension. Nonequilibrium cushion flow versus cushion pressure ratio did not show the discontinuity of slope near equilibrium predicted by all inviscid theories. The slopes of the pressure-flow curves were found to be predicted reasonably well by the inviscid underfed jet theory but predictions of actual magnitudes were in error by large factors. (Author)

• Corporate Authors:

  Massachusetts Institute of Technology

  Engineering Projects Laboratory
  Cambridge, MA  United States 
• Authors:
  • Richardson, H H
  • RIBICH, W A
• Publication Date: 1966-11-1

Media Info

• Pagination: 53 p.

Subject/Index Terms

• TRT Terms: Aerodynamics; Guideways; Intelligent transportation systems; Pneumatic conveyors; Suspensions; Tubing
• Old TRIS Terms: Advanced systems; Tube systems; Tube vehicles
• Subject Areas: Operations and Traffic Management; Railroads; Terminals and Facilities;

Filing Info

• Accession Number: 00039033
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DSR-76110-2
• Contract Numbers: C-85-65t
• Files: TRIS
• Created Date: Nov 24 1973 12:00AM