Abstract
The problem of laminar free convective heat transfer in the annulus between two eccentric horizontal isothermal tubes was solved numerically using a variational finite element method. Emphasis was given to the effect of eccentricity on the heat transfer coefficient in the Rayleigh number range from 0 to 10**4 and for different diameter ratios. In the range of eccentricities and diameter ratios considered, the increase in the overall heat transfer coefficient, as compared to the concentric geometry, reached a maximum of 38%. However, as the Raleigh number increases, the effect of eccentricity decreases. The general criterion agrees with the experimental results of J. H. Kuehn and R. J. Goldstein at high Rayleigh numbers. The overall heat transfer coefficient continues to be strongly influenced by eccentricity over a wider range of Rayleigh numbers of smaller diameter ratio annuli.
| Original language | English |
|---|---|
| Pages (from-to) | 190-197 |
| Number of pages | 8 |
| Journal | Transactions of the Canadian Society for Mechanical Engineering |
| Volume | 7 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1983 |
ASJC Scopus subject areas
- Mechanical Engineering