Numerical study on flow andheat transfer characteristics in therod bundle channels under super critical pressure condition
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Numerical study on flow andheat transfer characteristics in therod bundle channels under super critical pressure condition
- 发表刊物：
- Annals of Nuclear Energy
- 摘要：
- In this study, the 3D flow and heat transfer characteristics in rod bundle channels of the super critical
water-cooled reactor were numerically investigated using CFX codes. Different turbulent models were
evaluated and the flow and heat transfer characteristics in different typical channels were obtained.
The effect of pitch-to-diameter ratio (P/D) on the distributions of surface temperature and heat transfer
coefficient (HTC) was analysed. For typical quadrilateral channel, it was found that HTC increases with P/
D first and then decreases significantly when P/D is <1.4. There exists a ‘‘flat region” at the maximum
value when P/D is 1.4. If P/D is larger than 1.4, heat transfer deterioration (HTD) occurs as main stream
enthalpy is quite small. Furthermore, the HTD under low mass flow rate and the non-uniformity of circumferential
temperature were also discussed.
- 合写作者：
- Xingbo Yang, Guanghui Su, Wenxi Tian et al.
- 卷号：
- Vol.37(12)
- 页面范围：
- 1723-1734
- 是否译文：
- 否
- 发表时间：
- 2010-10-01