Experimental and Numerical Investigations of Natural Convection in a Vertical Annulus

ZHANG Sheng; GU Hanyang; CHEN Yuqing; ZHOU Xiaojia; LIU Gang

doi:10.13832/j.jnpe.2015.01.0014

Volume 36 Issue 1

Feb. 2025

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2015 > 36(1): 14-17

ZHANG Sheng, GU Hanyang, CHEN Yuqing, ZHOU Xiaojia, LIU Gang. Experimental and Numerical Investigations of Natural Convection in a Vertical Annulus[J]. Nuclear Power Engineering, 2015, 36(1): 14-17. doi: 10.13832/j.jnpe.2015.01.0014

Citation:

ZHANG Sheng, GU Hanyang, CHEN Yuqing, ZHOU Xiaojia, LIU Gang. Experimental and Numerical Investigations of Natural Convection in a Vertical Annulus[J]. Nuclear Power Engineering, 2015, 36(1): 14-17. doi: 10.13832/j.jnpe.2015.01.0014

Citation:

PDF( 416 KB)

Experimental and Numerical Investigations of Natural Convection in a Vertical Annulus

doi: 10.13832/j.jnpe.2015.01.0014

1. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China;
2. Shanghai Nuclear Engineering Research and Design Institute, Shanghai, 200233, China

Received Date: 2014-02-12
Rev Recd Date: 2014-07-09

Available Online: 2025-02-15

Abstract

Abstract

Experimental investigation of natural convection in a long vertical annulus closed at the top and opened at the bottom is presented. Numerical simulation is performed using the restricted domain model and extended domain model. The outer wall and top wall of inner cylinder are insulated. The outer wall of outer cylinder is cooled with the following speeds: 2.9, 5.7, 8.6m/s. And the corresponding Grashof number is 9.8×10⁶, 3.9×10⁶, and 8.3×10⁵. The discrepancy between the numerical and experimental results is small when Grashof number is less than 10⁶ and becomes bigger when Grashof number exceeds 10⁶.
- Vertical annulus,
- Natural convection,
- Experimental investigation,
- Numerical investigation