A Two-Dimensional Model of the Fluid Dynamics of an Air Reverser-Reference-Cited by-同舟云学术

A Two-Dimensional Model of the Fluid Dynamics of an Air Reverser

Published:1998-03-01 Issue:1 Volume:65 Page:171-177
ISSN:0021-8936
Container-title:Journal of Applied Mechanics
language:en
Short-container-title:

Author:

Mu¨ftu¨ S.¹,Lewis T. S.²,Cole K. A.³,Benson R. C.⁴

Affiliation:

1. Massachusetts Institute of Technology, Haystack Observatory, Westford, MA 01886

2. Eastman Kodak Company, Engineering Research Center, 901 Elmgrove Road, Rochester, NY 14653

3. Eastman Kodak Company, Web Dynamics Group, Building 10, Kodak Park, Rochester, NY 14652

4. Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

Abstract

A theoretical analysis of the fluid mechanics of the air cushion of the air reversers used in web-handling systems is presented. A two-dimensional model of the air flow is derived by averaging the equations of conservation of mass and momentum over the clearance between the web and the reverser. The resulting equations are Euler’s equations with nonlinear source terms representing the air supply holes in the surface of the reverser. The equations are solved analytically for the one-dimensional case and numerically for the two-dimensional case. Results are compared with an empirical formula and the one-dimensional airjet theory developed for hovercraft. Conditions that maximize the air pressure supporting the web are analyzed and design guidelines are deduced.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Link

http://asmedigitalcollection.asme.org/appliedmechanics/article-pdf/65/1/171/5465517/171_1.pdf

Reference17 articles.

1. Abramovich, G. N., 1963, The Theory of Turbulent Jets, M.I.T. Press, Cambridge, MA.

2. Blackmun, R. C., 1997, “Correlation of Factors Affecting Web Clearance Around Air Reversers,” private communication, Eastman Kodak Company, Rochester, NY.

3. Burden, R. L., and Faires, J. D., 1989, Numerical Analysis, PWS-Kent, Boston.

4. Chandra C. J. G. , SrinivasY. L., SeetharamuK. H., and ParameswaranM. A., 1990, “Investigation of Air Film Conveyor Pressurised Through Multiple Holes,” Finite Elements in Analysis and Design. Vol. 6, pp. 235–243.

5. Elsley, G. H., and Devereux, A. J., 1968, Hovercraft Design and Construction, Cornell Maritime Press, Cambridge, MD.

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