Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9060
Title: Numerical simulations on laminar natural convection in a square cavity with a conducting circular block
Authors: Zou, JF
Gao, Y
Chow, WK 
Keywords: Natural convection
Nusselt number
Rayleigh number
Issue Date: 2010
Publisher: Edizioni ETS
Source: International journal of heat and technology, 2010, v. 28, no. 1, p. 1-8 How to cite?
Journal: International journal of heat and technology 
Abstract: Numerical simulation on steady-state two-dimensional laminar natural convection in a square cavity with a conducting circular block will be reported in this paper. The cavity was inclined at an angle F to the horizontal. Simulations were carried out with F varying from 15° to 90° on increments of 15°. Three values of Rayleigh number of 104, 105 and 106 were used. Thermal conductivity ratios k* for block to fluid were 0.2 and 5. Results indicated that the flow fields would be very complicated when the Rayleigh number increased. This is more obvious at smaller angles of F. For certain values of k and F, the average Nusselt number of the hot wall would increase with the Rayleigh number. When the angle F increased to exceed a critical value, the average Nusselt number for k* of 0.2 is larger than that for k* of 5. The critical value F decreases as the Rayleigh number increases.
URI: http://hdl.handle.net/10397/9060
ISSN: 0392-8764
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