Entrainment by a Refrigerated Air Curtain Down a Wall

[+] Author and Article Information
Pratik Bhattacharjee, Eric Loth

Department of Aeronautical and Astronautical Engineering, University of Illinois Urbana Champaign, 104 S Wright St., Urbana, IL 61801

J. Fluids Eng 126(5), 871-879 (Dec 07, 2004) (9 pages) doi:10.1115/1.1792263 History: Received March 04, 2003; Revised March 02, 2004; Online December 07, 2004
Copyright © 2004 by ASME
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Field, B., 2001, “Entrainment in Refrigerated Air Curtains,” M.S thesis, Department of Mechanical Engineering, University of Illinois at Urbana–Champaign.
Field, B., and Loth, E., 2001, “Understanding and Reducing Air Curtain Entrainment: an Experimental Study,” in Proceedings of ASME: Fluids Engineering Division Summer Meeting 29 May–1 June, 2001, New Orleans, LA.
Stribling, D., Tassou, S., and Marriott, D., 1995, “A Two-Dimensional CFD Model of a Refrigerated Display Case,” ASHRAE Transactions, Research 4018.
Hayes, F. C., 1968, “Heat Transfer Characteristics of the Air Curtain: a Plane Jet Subjected to Transverse Pressure and Temperature Gradients,” Dissertation.
Hetsroni,  G., Hall,  C. W., and Dhanak,  A. M., 1963, “Heat Transfer Properties of an Air Curtain,” Trans. ASAE, 6, pp. 328–334.
Baleo, J. N., Guyonnaud, L., and Solliec, C., 1995, “Numerical Simulation of Air Flow Distribution in a Refrigerated Display Case Curtain,” National Congress of Refrigeration Proceedings.
George, B., and Buttsworth, D. R., 2000, “Investigation of an Open Refrigeration Cabinet Using Computational Simulations With Supporting Equipment,” IMECE, Orlando, FL.
Howell, R. H., 1993, “Effects of Store Relative Humidity on Refrigerated Display Case Performance,” ASHRAE Transactions, Research: 3686.
Navaz,  H. K., Faramarzi,  R., Gharib,  M., Dabiri,  D., and Modarress,  D., 2002, “The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case,” ASME J. Fluids Eng., 124, pp. 756–764.
Bush, R. H., Power, G. D., and Towne, C. E., 1998, “WIND: The Production Flow Solver of the NPARC Alliance,” AIAA 98-0935.
Menter,  F., 1994, “Two-Equation Eddy Viscosity Turbulence Models for Engineering Applications,” AIAA J., 32, pp. 1598–1605.
Cazalbou,  J. B., Spalart,  P. R., and Bradshaw,  P., 1994, “On the Behavior of Two-Equation Models at the Edge of a Turbulent Region,” Phys. Fluids, 6, pp. 1797–1804.
Yoder, D. A., Georgiadis, N., and Nicholas, J., 1999, “Implementation and Validation of the Chien k-Epsilon Turbulence Model in the WIND Navier-Stokes Code,” AIAA Paper 99-0745.
Nichols, R. H., and Tramel, R. W., 1997, “Application of a Highly Efficient Numerical Method for Overset-Mesh Moving Body Problems,” AIAA Paper 97-2255.
Bhattacharjee, P., 2002, “Simulation of Wall Jet Entrainment,” M.S thesis, Aeronautical and Astronautical Engineering, University of Illinois at Urbana–Champaign.
Gogineni,  S., and Shih,  C., 1997, “Experimental Investigation of the Unsteady Structure of a Transitional Wall Jet,” Exp. Fluids, 23, pp. 121–129.
Gogineni,  S., Visbal,  M., and Shih,  C., 1998, “Phase-Resolved PIV Measurements in a Transitional Plane Wall Jet: a Numerical Study,” Exp. Fluids, 27, pp. 126–136.
Kim,  J., Moin,  P., and Moser,  R., 1987, “Turbulence Statistics in Fully Developed Channel Flow at Low Reynolds Number,” J. Fluid Mech., 177, pp. 133–166.
Wilcox, D. C., 1993, “Turbulence Modeling for CFD,” La Canada, CA, DCW Industries.


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Smoke injection visualization of the air-curtain for a refrigerated display-case where the smoke is injected at the cold-air jet at the top of the curtain. The diffusion of the jet shows the ambient air entrainment into the air curtain and at the bottom the spillover of injected air can be seen 6.
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Air curtain idealized as a wall jet with a uniform inflow profile and a uniform co-flowing stream
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Wall jet grid showing (a) close-up near inflow and (b) overall domain
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Instantaneous temperature contours with parabolic inflow for (a) Re=700, (b) Re=1000, and (c) Re=2000
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Instantaneous thermal entrainment at x/H=10 with uniform, parabolic, and ramp inflow for (a) Re=700, (b) Re=1000, and (c) Re=2000
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The instantaneous thermal entrainment at x/H=10 at Re=2000: 3-D versus 2-D
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Instantaneous thermal entrainment versus time for various velocity profiles x/H=10 and for Re=2000
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Time variation of thermal entrainment for Reynolds number of 2000 at three various streamwise stations
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Thermal entrainment as a function of Reynolds number at x/H=10 and 20
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Co-flow effects: thermal entrainment variation with Reynolds number
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Variation of the thermal entrainment with Richardson number for parabolic flow at Re=2000 for two different streamwise locations
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Variation of the convective thermal energy loss with the Reynolds number for a jet with parabolic inflow at x/H=20




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