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

By Safiah Othman


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

Topics: T Technology (General)
Year: 2008
OAI identifier: oai:eprints.uthm.edu.my:276
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