Numerical study of transient mixed convection in a cylindrical cavity

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

DOI:https://doi.org/10.1080/10407789708914039· OSTI ID:449609

Bouhdjar, A; Benkhelifa, A ^[1]; Harhad, A ^[2]

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1. Centre de Developpement des Energies Renouvelables, Alger (Algeria)
2. Univ. de Blida (Algeria). Inst. de Mecanique

This article presents a numerical study of transient mixed convection of laminar flows in a vertical cylindrical cavity. Initially, the fluid is considered at rest and motionless. The top, bottom, and peripheral surfaces of the tank are assumed to be well insulated. Fluid at a temperature above the initial temperature is injected into the cavity from different port locations. The resulting dynamic and thermal fields for different Richardson numbers are numerically studied in order to investigate the influence of geometrical parameters such as the inlet and outlet positions of the fluid. Study of the thermal stratification and thermal storage efficiency is also presented. To verify the validity of the solution procedure, three flow models taken from the literature are tested. The results are in good agreement with those of the references. For the case of the cylindrical cavity, the present model has been shown to predict the most efficient configuration with respect to thermal storage efficiency.

• Sponsoring Organization: USDOE
• OSTI ID: 449609
• 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

25 ENERGY STORAGE
CAVITIES
CONVECTION
HEAT STORAGE
LAMINAR FLOW
NUMERICAL ANALYSIS
STRATIFICATION
THERMAL ENERGY STORAGE EQUIPMENT