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CONV-09. Proceedings of International Symposium on Convective Heat and Mass Transfer in Sustainable Energy
April 26 - May 1, 2009, Hammamet, Tunisia

DOI: 10.1615/ICHMT.2009.CONV


ISBN Print: 978-1-56700-261-4

ISSN Online: 2642-3499

ISSN Flash Drive: 2642-3502

PITCHFORK BIFURCATION OF THEMIXED CONVECTION IN A VERTICAL CHANNEL

page 8
DOI: 10.1615/ICHMT.2009.CONV.600
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ABSTRACT

The steady laminar mixed convection in a two-dimensional vertical channel with locally and symmetrically heated walls is studied numerically. The fluid flows downward through the channel. The walls are thermally insulated in the upstream part, maintained at a constant temperature in the heated middle part, and thermally insulated in the downstream part. The present contribution deals, in particular, with the bifurcation from a symmetric to an asymmetric solution in such opposed flow conditions. In fact, the symmetry breaking occurs at a value of the Richardson number of about 4.5.

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