The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case

Homayun K. Navaz; Ramin Faramarzi; Morteza Gharib; Dana Dabiri; Darius Modarress

doi:10.1115/1.1478586

Journal of Fluids Engineering | Volume 124 | Issue 3 | TECHNICAL PAPERS

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TECHNICAL PAPERS

The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case

Homayun K. Navaz, Associate Professor of Mechanical Engineering, Ramin Faramarzi, Refrigeration and Thermal Test Center Project Manager, Morteza Gharib, Professor of Aeronautics, Dana Dabiri, Research Scientist and Darius Modarress, President

[+] Author and Article Information

Homayun K. Navaz

Kettering University, Flint, MI 48504

Ramin Faramarzi

Southern California Edison Company, Irwindale, CA 91702

Morteza Gharib

California Institute of Technology, Pasadena, CA 91125

Dana Dabiri

California Institute of Technology, Pasadena, CA 91125

Darius Modarress

Viosense Corporation, Pasadena, CA 91106

J. Fluids Eng 124(3), 756-764 (Aug 19, 2002) (9 pages) doi:10.1115/1.1478586 History: Received March 14, 2001; Revised January 14, 2002; Online August 19, 2002

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Components of velocity profile along the display case opening as predicted by the CFD and DPIV techniques for Scenario 1

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CFD results for temperature contours in Scenario 1

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Infrared image of the tested display case with corresponding temperature profile

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Velocity profile at the discharge grill for test Scenario 3 predicted by the DPIV technique

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Mean vertical velocity and streamline fields for test Scenario 3

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Typical DPIV experimental setup

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(a) Case schematics and sensor locations with discharge and return grills. (b) Schematic of the display case with dimensions. (c) Simulator and dummy products used in the display case. (d) Multi-deck display case used in the present study.

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Infiltration rate as a function of the discharge air average velocity and temperature by linear curve fit

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Components of velocity profile along the display case opening as predicted by the CFD and DPIV techniques for Test Scenario 3

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Temperature contours for test Scenario 3

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Infiltration rate as a function of the discharge air average velocity and temperature by parabolic curve fit

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Navaz HK, Faramarzi R, Gharib M, Dabiri D, Modarress D. The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case. ASME. J. Fluids Eng. 2002;124(3):756-764. doi:10.1115/1.1478586.

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The Application of Advanced Methods in Analyzing the Performance of the Air Curtain in a Refrigerated Display Case

References

Figures

Computational grid and zones

Air velocity profile at the display case outlet for Scenario 1

Mean velocity and streamline fields for Scenario 1

Axial velocity contours at the opening

Components of velocity profile along the display case opening as predicted by the CFD and DPIV techniques for Scenario 1

CFD results for temperature contours in Scenario 1

Infrared image of the tested display case with corresponding temperature profile

Velocity profile at the discharge grill for test Scenario 3 predicted by the DPIV technique

Mean vertical velocity and streamline fields for test Scenario 3

Typical DPIV experimental setup

(a) Case schematics and sensor locations with discharge and return grills. (b) Schematic of the display case with dimensions. (c) Simulator and dummy products used in the display case. (d) Multi-deck display case used in the present study.

Infiltration rate as a function of the discharge air average velocity and temperature by linear curve fit

Components of velocity profile along the display case opening as predicted by the CFD and DPIV techniques for Test Scenario 3

Temperature contours for test Scenario 3

Infiltration rate as a function of the discharge air average velocity and temperature by parabolic curve fit

Tables

Errata

Discussions

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