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TECHNICAL PAPERS: Natural and Mixed Convection

Buoyancy-Driven Flow Transitions in Deep Cavities Heated From Below

[+] Author and Article Information
Chunmei Xia, Jayathi Y. Murthy

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Heat Transfer 124(4), 650-659 (Jul 16, 2002) (10 pages) doi:10.1115/1.1481356 History: Received May 18, 2001; Revised March 07, 2002; Online July 16, 2002
Copyright © 2002 by ASME
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References

Figures

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Flow behavior at Ra=4.68×105 for Ar=1: (a) U velocity variation with time at point (X=0.7,Y=0.7,Z=0.7),Ar=1; and (b) corresponding power spectrum.
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Flow behavior at Ra=4.80×105 for Ar=1: (a) U velocity variation with time at point (X=0.7,Y=0.7,Z=0.7),Ar=1; and (b) corresponding power spectrum.
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Steady state flow pattern for Ar=2: (a) Ra=3×104; (b) Ra=1.22×105; and (c) Ra=1.62×106
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Flow behavior at Ra=1.65×106 for Ar=2: (a) U velocity variation with time at point (X=0.35,Y=0.35,Z=0.7),Ar=2; and (b) corresponding power spectrum.
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Flow behavior at Ra=1.67×106 for Ar=2: (a) U velocity variation with time at point (X=0.35,Y=0.35,Z=0.7),Ar=2; and (b) corresponding power spectrum.
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Natural convection in cubical cavity
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2T configuration for a box of 16.42×27.72×7.9 mm (isolines of vertical velocity at horizontal middle plane for Ra=3×104,Pr=2.5)
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Comparison with Gollub-Benson 7 and Stella-Bucchignani 8 (V velocity along Y at X=1.651 and Z=0.875 for Ra=3×104,Pr=2.5)
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Comparison of RaI with Davis 4
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Steady state flow pattern for Ar=1: (a) Ra=2×104; (b) Ra=105; and (c) Ra=2×105.
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Flow behavior at Ra=4.07×105 for Ar=1: (a) U velocity variation with time at point (X=0.7,Y=0.7,Z=0.7),Ar=1; and (b) Corresponding power spectrum.
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Flow behavior at Ra=4.275×105 for Ar=1: (a) U velocity variation with time at point (X=0.7,Y=0.7,Z=0.7),Ar=1; and (b) corresponding power spectrum.
Grahic Jump Location
Flow behavior at Ra=4.48×105 for Ar=1: (a) U velocity variation with time at point (X=0.7,Y=0.7,Z=0.7),Ar=1; and (b) corresponding power spectrum.
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Flow behavior at Ra=1.69×106 for Ar=2: (a) U velocity variation with time at point (X=0.35,Y=0.35,Z=0.7),Ar=2; and (b) corresponding power spectrum.
Grahic Jump Location
Flow behavior at Ra=1.71×106 for Ar=2: (a) U velocity variation with time at point (X=0.35,Y=0.35,Z=0.7),Ar=2; and (b) corresponding power spectrum.
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Flow behavior at Ra=1.83×106 for Ar=2: (a) U velocity variation with time at point (X=0.35,Y=0.35,Z=0.7),Ar=2; and (b) corresponding power spectrum.

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