Numerical study of natural-convection heat transfer in eccentric horizontal cylindrical annuli (heat-transfer enhancement effect for eccentricity on symmetry axis)

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Heat Transfer - Japanese Research

OSTI ID:89573

Hirose, Koichi; Saito, Futami; Ouchi, Masaki ^[1]

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1. Iwate Univ. (Japan). Dept. of Mechanical Engineering

A numerical analysis for natural-convection heat transfer in eccentric annuli is presented. This problem is one of the most basic problems for a shell and tube-type heat exchanger. Many studies on heat transfer in eccentric cylindrical annuli on the view of flow pattern have been done; however, only a few studies on the effect of eccentricity on heat-transfer enhancement have been conducted. The numerical method presented in this paper utilized the boundary-fixing method which is applicable to the moving-boundary problem. Calculations are made for isotherms, streamlines, dimensionless Nusselt number distribution around the cylinder, and dimensionless total heat transfer. The effects of eccentricity on heat-transfer enhancement and convection mechanism in eccentric cylindrical annuli are presented.

• OSTI ID: 89573
• Journal Information: Heat Transfer - Japanese Research, Journal Name: Heat Transfer - Japanese Research Journal Issue: 5 Vol. 23; ISSN 0096-0802; ISSN HTJPAU
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ANNULAR SPACE
AUGMENTATION
HEAT EXCHANGERS
NATURAL CONVECTION
ORIENTATION