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Journal articles
From natural to mixed convection in horizontal and differentially heated annular ducts: linear stability analysis
Abstract : Linear stability analysis of a fully developed mixed convection flow of air in an annular horizontal duct is numerically investigated for the radius ratio R=1.2, a Péclet and a Rayleigh number less than 200 and 6000, respectively. An iterative method is developed to enable the convergence of the dimensionless parameters to their marginal values at the transition. New mixed convection flows are highlighted that are highly correlated with those obtained in natural convection problems under the assumption of two dimensionality. The synthesis of our results on the transitions permits us to build the map of stability for the steady and established mixed convection flows and clearly shows the occurrence of multiplicity of solutions for some couples of Rayleigh and Péclet numbers.
Cited literature [27 references]
https://hal-upec-upem.archives-ouvertes.fr/hal-00682950
Contributor : Eric Chénier <>
Submitted on : Tuesday, March 27, 2012 - 1:16:55 PM
Last modification on : Monday, June 14, 2021 - 10:03:25 AM
Long-term archiving on: : Thursday, June 28, 2012 - 2:28:18 AM
Contributor : Eric Chénier <>
Submitted on : Tuesday, March 27, 2012 - 1:16:55 PM
Last modification on : Monday, June 14, 2021 - 10:03:25 AM
Long-term archiving on: : Thursday, June 28, 2012 - 2:28:18 AM
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