Quanfu Gaoa,b
, Kun Zhanga,b,*, Liang Bi Wanga,b
Frontiers in Heat and Mass Transfer, Vol.14, pp. 1-10, 2020, DOI:10.5098/hmt.14.29
Abstract Detailed numerical analysis is presented for natural convection heat transfer in internally finned horizontal annuli. Governing equations are discretized
using the finite volume method, and solved using SIMPLE algorithm with Quick scheme. The results show that the flow and heat transfer can reach
steady state when the Rayleigh number is below 2×104. When the Rayleigh number is greater than 3×104
, two different types of numerical solutions
under the same parameters can be obtained for different initial conditions. The critical Rayleigh numbers with two different initial conditions are
different from steady to unsteady solutions. The oscillatory More >
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