Simulations of three-dimensional laminar forced convection in a plane symmetric sudden expansion are presented for Reynolds numbers where the flow is steady and symmetric. A swirling “jetlike” flow develops near the sidewalls in the separating shear layer, and its impingement on the stepped wall is responsible for the maximum that develops in the Nusselt number adjacent to the sidewalls and for the reverse flow that develops in that region. The maximum Nusselt number on the stepped wall is located inside the primary recirculation flow region and its location does not coincide with the jetlike flow impingement region. The results reveal that the location where the streamwise component of wall shear stress is zero on the stepped walls does not coincide with the outer edge of the primary recirculation flow region near the sidewalls.
Three-Dimensional Forced Convection in Plane Symmetric Sudden Expansion
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division December 12, 2003; revision received April 21, 2004. Associate Editor: K. S. Ball.
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Nie and , J. H., and Armaly, B. F. (November 16, 2004). "Three-Dimensional Forced Convection in Plane Symmetric Sudden Expansion ." ASME. J. Heat Transfer. October 2004; 126(5): 836–839. https://doi.org/10.1115/1.1795242
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