A study of free convection induced by a vertical wavy surface with heat flux in a porous enclosure

Journal Article · Sat Apr 01 04:00:00 EST 2000 · Numerical Heat Transfer. Part A, Applications

DOI:https://doi.org/10.1080/104077800274181· OSTI ID:20067731

Kumar, B V.R.

Study of natural convection in porous enclosures is of great importance in several scientific and engineering applications such as nuclear waste management, transpiration cooling, building thermal insulators, geothermal power plants, grain storage, and so on. Here, free convection induced by a vertical wavy surface with uniform heat flux in a porous enclosure has been analyzed numerically using the finite element method (FEM). The flow and the convection process in the cavity is found to be sensitive to the flow parameter Rayleigh number (Ra), and geometrical parameters like wave amplitude (a), wave phase ({phi}), and number of waves (N) in the vertical dimension of the cavity. The study reveals that small sinusoidal drifts from the smoothness of a vertical wall with a phase angle of 60{degree} and high frequency enhances the free convection from a vertical wall with uniform heat flux.

• Research Organization: Indian Inst. of Tech., Kanpur (IN)
• OSTI ID: 20067731
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 5 Vol. 37; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CAVITIES
FINITE ELEMENT METHOD
NATURAL CONVECTION
POROUS MATERIALS
ROUGHNESS