Convection heat transfer from a laminar flow over a 2-D backward facing step with asymmetric and orthotropic porous floor segments

Journal Article · Fri Feb 21 04:00:00 EST 1997 · Numerical Heat Transfer. Part A, Applications

DOI:https://doi.org/10.1080/10407789708914040· OSTI ID:449610

Abu-Hijleh, B ^[1]

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1. Jordan Univ. of Science and Technology, Irbid (Jordan). Mechanical Engineering Dept.

The fluid and energy equations for the incompressible laminar reattaching flow over a 2-D backward facing step with a porous floor segment were solved numerically using the finite element method. The focus of this study was the change in the forced convection heat transfer characteristics of the flow field due to the addition of a porous floor segment. Several porous flow segment configurations with different lengths and depths were studied. The effect of orthotropicity of the porous segments was also studied. The porosity of the segments was varied over a wide range by changing the value of the pressure loss coefficients in either or both of the x and y directions. The changes in the local and overall Nusselt numbers were reported and discussed. Depending on the configuration, the overall Nusselt number increased or decreased relative to the case of a solid floor. For all configurations, the maximum local Nusselt number increased.

• Sponsoring Organization: USDOE
• OSTI ID: 449610
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 3 Vol. 31; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOUNDARY LAYERS
CONFIGURATION
FORCED CONVECTION
LAMINAR FLOW
NUMERICAL ANALYSIS
POROUS MATERIALS