A numerical study of transient natural convection of water near its density extremum

Othman, Safiah (2008) A numerical study of transient natural convection of water near its density extremum. In: International Conference on Mechanical and Manufacturing Engineering 2008 (ICME 2008), Puteri Pacific Johor Bahru, Johor, Malaysia .

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Abstract

This numerical (CFD) study investigates the transient natural convection of water near its density extremum within a vertical cylindrical geometry. A non-Boussinesq approach is employed and the results are compared to previous studies. Distilled water having initial temperature of 8 ºC is used as the medium, while the entire cavity is insulated. This experimental chamber is enclosed within another glass cylinder, and coolant fluid at a fixed temperature of 0 ºC is pumped continuously through the annular region between the cylinders. Results of cooling curve measurements and the flow patterns present good agreement. From the resulting numerical outputs, it is evident that the density inversion of water has a significant influence on the natural convection in the cavity.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:numerical, transient natural convection of water, density extremum
Subjects:T Technology > T Technology (General)
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
ID Code:276
Deposited By:Norfauzan Md Sarwin
Deposited On:22 Jan 2010 15:10
Last Modified:29 Apr 2011 14:40

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