Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes

ZHANG De; CHEN Wenzhen; WANG Shaoming

Mar. 2025

Article Contents

Article Navigation > Nuclear Power Engineering > 2012 > 33(3): 33-37

ZHANG De, CHEN Wenzhen, WANG Shaoming. Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes[J]. Nuclear Power Engineering, 2012, 33(3): 33-37.

Citation:

ZHANG De, CHEN Wenzhen, WANG Shaoming. Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes[J]. Nuclear Power Engineering, 2012, 33(3): 33-37.

ZHANG De, CHEN Wenzhen, WANG Shaoming. Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes[J]. Nuclear Power Engineering, 2012, 33(3): 33-37.

Citation:

ZHANG De, CHEN Wenzhen, WANG Shaoming. Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes[J]. Nuclear Power Engineering, 2012, 33(3): 33-37.

PDF( 284 KB)

Effect of U-Tube Length on Space Distribution of UTSG Reverse Flow in Tubes

Department of Nuclear Energy Science and Engineering。Naval University of Engineering, Wuhan, 430033, China

Received Date: 2011-03-31
Rev Recd Date: 2011-05-28

Available Online: 2025-03-08

Abstract

Abstract

For natural circulation,it is shown that parallel flow in the tubes of inverted U-tube steam generators can be non-uniform.And reverse flow occurs in some tubes.Existing studies on the space distribution of reverse flow tubes are dissident.A flow model of one-dimensional steady state is established.Analysis shows that the length will change the relationship of flow characteristics between tubes.And the space distribution of reverse flow tube differs further.When the U-tube length of UTSG is small enough,flow excursion will occur earlier in shorter tube than longer tube,and vise versa.And the analysis is validated by best estimate code RELAP5/MOD3.3.
- UTSG,
- Reverse flow,
- Space distribution