NDLI: Partially Decoupled Aisle Method for Estimating Rack-Cooling Performance in Near-Real Time

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	James, W. Vangilder Zhang, Xuanhang Saurabh, K. Shrivastava
Copyright Year	2007
Abstract	The Partially Decoupled Aisle (PDA) method facilitates a near-real-time cooling-performance analysis of a single cluster of racks and, potentially, coolers, bounding a common hot or cold aisle in a data center. With the PDA method, the airflow patterns and related variables need be computed only within an isolated cold or hot aisle “on the fly” through CFD analysis or other means. The analysis is fast because the much larger surrounding room environment is not directly modeled; its effect enters the model through the boundary conditions applied to the top and ends of the isolated aisle. The proper boundary conditions in turn may be estimated from an empirical model determined in advance (“offline”) from the study of a large number of CFD simulations of varying equipment layouts and room environments. A software tool based on the PDA method, which uses a full CFD engine to solve the aisle airflow within the isolated aisle, can analyze a typical cluster of racks and coolers in 10–30 seconds and requires no special user skills. This paper formally introduces the general PDA method and shows several examples of its application with comparisons to corresponding whole-room CFD analyses.
Sponsorship	Electronic and Photonic Packaging Division
Starting Page	781
Ending Page	789
Page Count	9
File Format	PDF
ISBN	0791842770
DOI	10.1115/IPACK2007-33447
e-ISBN	0791838013
Volume Number	ASME 2007 InterPACK Conference, Volume 1
Conference Proceedings	ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference
Language	English
Publisher Date	2007-07-08
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Data centers Air flow Cooling Computational fluid dynamics Simulation Computer software Coolers Boundary-value problems Engineering simulation Engines
Content Type	Text
Resource Type	Article

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