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TECHNICAL PAPERS

Aerodynamic Characteristics of Pressure-Pad Air Bars

[+] Author and Article Information
Y. B. Chang, P. M. Moretti

School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078

J. Appl. Mech 67(1), 177-182 (Sep 10, 1999) (6 pages) doi:10.1115/1.321161 History: Received January 01, 1999; Revised September 10, 1999
Copyright © 2000 by ASME
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References

Bezella,  G. L., 1976, “Application of Floater Dryers to the Paper Industry,” Tappi J., 59, No. 4, pp. 92–96.
Fraser, W. A. R., 1983, “Air Flotation Systems: Theoretical Considerations & Practical Applications, Part I,” Paper, Film, Foil Converter, May, pp. 162–165.
Fraser, W. A. R., 1983, “Air Flotation Systems: Theoretical Considerations & Practical Applications, Part II,” Paper, Film, Foil Converter, June, pp. 112–118.
Krizek,  F., 1986, “Impinging Jet Systems to Support and Dry Paper,” Drying Technol., 4, No. 2, pp. 271–294.
Pinnamaraju, R., 1992, “Measurements on Air Bar/Web Interaction for the Determination of Lateral Stability of a Web in Flotation Ovens,” M.S. report, Oklahoma State University, Stillwater, OK.
Nisankararao, K., 1994, “An Experimental Study of Aerodynamic Forces of Air Bars,” M. S. thesis, Oklahoma State University, Stillwater, OK.
Mair,  W. A., 1964, “The Physical Principles of Hovercraft,” Hovering Craft Hydrofoils, 4, No. 3, pp. 5–13.
Jaumotte,  A., and Kiedrzynski,  A., 1965, “Theory and Experiments on Air Cushion Vehicles at Zero Speed,” Hovering Craft Hydrofoils, 4, pp. 4–25.
Davies,  M. J., and Wood,  D. H., 1983, “The Basic Aerodynamics of Flotation,” ASME J. Fluids Eng., 105, pp. 323–328.
Crewe,  P. R., and Eggington,  W. J., 1960, “The Hovercraft—A New Concept in Maritime Transport,” Trans. R. Inst. Naval Arch., 102, pp. 315–356.
Strand,  T., 1961, “Inviscid-Incompressible-Flow Theory of Static Peripheral Jets in Proximity to the Ground,” J. Aerosp. Sci., 28, No. 1, pp. 27–33.
Alexander,  A. J., 1966, “The Momentum Equation for a Static Hovercraft at Zero Incidence,” J. R. Aeronaut. Soc., 70, p. 363.
Bradbury,  L. J. S., 1967, “A Mixing Theory for the Hovering of Peripheral-Jet Air Cushion Vehicles,” J. R. Aeronaut. Soc., 71, pp. 53–54.
Bourque,  C., and Newman,  B. G., 1960, “Reattachment of a Two-Dimensional Incompressible Jet to an Adjacent Flat Plate,” Aeronaut. Q., 11, pp. 201–232.
Rouse, H., 1946, Elementary Mechanics of Fluids, Wiley, New York (Dover edition published in 1978).
Richardson, H. H., Ribich, W. A., and Ercan, Y., 1968, “Pressure-Flow-Displacement Characteristics of a Peripheral Jet Fluid Suspension,” Report DSR 76110-7, MIT.
Hope-Gill,  C. D., 1970, “Analysis of High-Speed Peripheral Jet for AVC Applications,” J. Hydronaut., 4, pp. 80–85.

Figures

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Cross section of air bars and the web in oven
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Schematic of ground effect model
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Effects of flotation height on cushion pressure
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Effects of jet ejection angle on cushion pressure
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Down view of typical air bar with vent holes
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Cross section of typical air bar with vent holes
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Schematic of test setup
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Effects of flotation height on pressure distribution for air bar 1
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Effects of flotation height on pressure distribution for air bar 2
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Comparison of theories and experiments for cushion pressure
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Comparison of theories and experiments for lift force
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Comparison of theories and experiments for lift force
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Lift force per unit length of air bar with vent holes

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