0
Research Papers: Heat Exchangers

Computational Fluid Dynamics Evaluation of Heat Transfer Correlations for Sodium Flows in a Heat Exchanger

[+] Author and Article Information
Seok-Ki Choi1

Fast Reactor Development Division, Korea Atomic Energy Research Institute, 150-1 Deokjin-dong, Yuseong-gu, Daejeon 305-353, Koreaskchoi@kaeri.re.kr

Seong-O Kim

Fast Reactor Development Division, Korea Atomic Energy Research Institute, 150-1 Deokjin-dong, Yuseong-gu, Daejeon 305-353, Korea

Hoon-Ki Choi

Department of Mechanical Engineering, Changwon National University, 7 Sarim-dong, Changwon, Gyeongnam 641-773, Korea

1

Corresponding author.

J. Heat Transfer 132(5), 051801 (Mar 04, 2010) (6 pages) doi:10.1115/1.4000707 History: Received December 03, 2008; Revised November 03, 2009; Published March 04, 2010; Online March 04, 2010

A numerical study for the evaluation of heat transfer correlations for sodium flows in a heat exchanger of a fast breeder nuclear reactor is performed. Three different types of flows such as parallel flow, cross flow, and two inclined flows are considered. Calculations are performed for these three typical flows in a heat exchanger changing turbulence models. The tested turbulence models are the shear stress transport (SST) model and the SSG-Reynolds stress turbulence model by Speziale, Sarkar, and Gaski (1991, “Modelling the Pressure-Strain Correlation of Turbulence: An Invariant Dynamical System Approach  ,” J. Fluid Mech., 227, pp. 245–272). The computational model for parallel flow is a flow past tubes inside a circular cylinder and those for the cross flow and inclined flows are flows past the perpendicular and inclined tube banks enclosed by a rectangular duct. The computational results show that the SST model produces the most reliable results that can distinguish the best heat transfer correlation from other correlations for the three different flows. It was also shown that the SSG-RSTM high-Reynolds number turbulence model does not deal with the low-Prandtl number effect properly when the Peclet number is small. According to the present calculations for a parallel flow, all the old correlations do not match with the present numerical solutions and a new correlation is proposed. The correlations by Dwyer (1966, “Recent Developments in Liquid-Metal Heat Transfer,” At. Energy Rev., 4, pp. 3–92) for a cross flow and its modified correlation that takes into account of flow inclination for inclined flows work best and are accurate enough to be used for the design of the heat exchanger.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Numerical grids: (a) parallel flow and (b) inclined flow

Grahic Jump Location
Figure 2

Grid dependency test (SST model, Pev,max=400, and β=60 deg)

Grahic Jump Location
Figure 3

Comparison of correlations and CFD results for a parallel flow

Grahic Jump Location
Figure 4

Comparison of correlations and CFD results for a cross flow (β=90 deg)

Grahic Jump Location
Figure 5

Comparison of correlations and CFD results for an inclined flow (β=60 deg)

Grahic Jump Location
Figure 6

Comparison of correlations and CFD results for an inclined flow (β=30 deg)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In