Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus

LU Guang-yao; SUN Zhong-ning; WANG Jing; YAN Chang-qi

Jun. 2006

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Article Navigation > Nuclear Power Engineering > 2006 > 27(3): 28-31

LU Guang-yao, SUN Zhong-ning, WANG Jing, YAN Chang-qi. Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus[J]. Nuclear Power Engineering, 2006, 27(3): 28-31.

Citation:

LU Guang-yao, SUN Zhong-ning, WANG Jing, YAN Chang-qi. Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus[J]. Nuclear Power Engineering, 2006, 27(3): 28-31.

LU Guang-yao, SUN Zhong-ning, WANG Jing, YAN Chang-qi. Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus[J]. Nuclear Power Engineering, 2006, 27(3): 28-31.

Citation:

LU Guang-yao, SUN Zhong-ning, WANG Jing, YAN Chang-qi. Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus[J]. Nuclear Power Engineering, 2006, 27(3): 28-31.

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Experimental Investigation on the Single-Phase Flow Friction in Narrow Annulus

1. School of Mechanical Engineering, Shanghai Jiao Tong University, 200030, China;
2. College of Power and Nuclear Engineering, Harbin Engineering University, 150001, China

Received Date: 2005-03-13
Rev Recd Date: 2005-12-17

Available Online: 2025-07-29

Abstract

Abstract

Experiments are carried out to investigate the flow friction characteristics with/without heat exchange in narrow annulus. The experiments involve three flow directions, which are horizontal flow, upward flow and downward flow. The transition from laminar to turbulent flow in annulus is initiated earlier than that in normal circular tubes. The friction factors of narrow annulus are compared with the conventional correlations, and the influences of the temperature difference and the flow directions are analyzed.
- Narrow annulus,
- Flow friction,
- Flow direction,
- Heat exchange