Computational fluid dynamics/heat transfer (CFD/HT) methods are too time consuming and costly to examine the effect of multiple design variables on the system thermal performance, especially for systems with multiple components and interacting physical phenomena. In this paper, a proper orthogonal decomposition (POD) based reduced order thermal modeling approach is presented for complex convective systems. The basic POD technique is used with energy balance equations, and heat flux and/or surface temperature matching to generate a computationally efficient thermal model in terms of the system design variables. The effectiveness of the presented approach is studied through application to an air-cooled data center cell with a floor area of and a total power dissipation of 240 kW, with multiple turbulent convective components and five design variables. The method results in average temperature rise prediction error of (4.9%) for different sets of design variables, while it is times faster than CFD/HT simulation. Also, the effects of the number of available algebraic equations and retained POD modes on the accuracy of the obtained thermal field are studied.
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e-mail: samadiani@gatech.edu
e-mail: yogendra.joshi@me.gatech.edu
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Proper Orthogonal Decomposition for Reduced Order Thermal Modeling of Air Cooled Data Centers
Emad Samadiani,
Emad Samadiani
G.W. Woodruff School of Mechanical Engineering,
e-mail: samadiani@gatech.edu
Georgia Institute of Technology
, Atlanta, GA 30332
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Yogendra Joshi
Yogendra Joshi
G.W. Woodruff School of Mechanical Engineering,
e-mail: yogendra.joshi@me.gatech.edu
Georgia Institute of Technology
, Atlanta, GA 30332
Search for other works by this author on:
Emad Samadiani
G.W. Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332e-mail: samadiani@gatech.edu
Yogendra Joshi
G.W. Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332e-mail: yogendra.joshi@me.gatech.edu
J. Heat Transfer. Jul 2010, 132(7): 071402 (14 pages)
Published Online: April 29, 2010
Article history
Received:
July 28, 2009
Revised:
December 1, 2009
Online:
April 29, 2010
Published:
April 29, 2010
Citation
Samadiani, E., and Joshi, Y. (April 29, 2010). "Proper Orthogonal Decomposition for Reduced Order Thermal Modeling of Air Cooled Data Centers." ASME. J. Heat Transfer. July 2010; 132(7): 071402. https://doi.org/10.1115/1.4000978
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