Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator
Helically coiled tube Once-Through Steam Generator (H-OTSG) is one of the key equipment types for small modular reactors. The flow instability of the secondary side of the H-OTSG is particularly serious, because the working condition is in the range of low and medium pressure. This paper presents re...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2016/3071686 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832558608285433856 |
|---|---|
| author | Junwei Hao Yaoli Zhang Jianxiang Zheng Zhiwei Zhou Xuanyu Sheng Gang Hong Kai Ye Ning Li |
| author_facet | Junwei Hao Yaoli Zhang Jianxiang Zheng Zhiwei Zhou Xuanyu Sheng Gang Hong Kai Ye Ning Li |
| author_sort | Junwei Hao |
| collection | DOAJ |
| description | Helically coiled tube Once-Through Steam Generator (H-OTSG) is one of the key equipment types for small modular reactors. The flow instability of the secondary side of the H-OTSG is particularly serious, because the working condition is in the range of low and medium pressure. This paper presents research on density wave oscillations (DWO) in a typical countercurrent H-OTSG. Based on the steady-state calculation, the mathematical model of single-channel system was established, and the transfer function was derived. Using Nyquist stability criterion of the single variable, the stability cases were studied with an in-house computer program. According to the analyses, the impact law of the geometrical parameters to the system stability was obtained. RELAP5/MOD3.2 code was also used to simulate DWO in H-OTSG. The theoretical analyses of the in-house program were compared to the simulation results of RELAP5. A correction factor was introduced to reduce the error of RELAP5 when modeling helical geometry. The comparison results agreed well which showed that the correction is effective. |
| format | Article |
| id | doaj-art-9a3f9a28e8c549198c2e5795c2b82aca |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-9a3f9a28e8c549198c2e5795c2b82aca2025-02-03T01:31:58ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832016-01-01201610.1155/2016/30716863071686Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam GeneratorJunwei Hao0Yaoli Zhang1Jianxiang Zheng2Zhiwei Zhou3Xuanyu Sheng4Gang Hong5Kai Ye6Ning Li7College of Energy, Xiamen University, Xiamen, ChinaCollege of Energy, Xiamen University, Xiamen, ChinaCollege of Energy, Xiamen University, Xiamen, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing, ChinaInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing, ChinaCollege of Energy, Xiamen University, Xiamen, ChinaCollege of Energy, Xiamen University, Xiamen, ChinaCollege of Energy, Xiamen University, Xiamen, ChinaHelically coiled tube Once-Through Steam Generator (H-OTSG) is one of the key equipment types for small modular reactors. The flow instability of the secondary side of the H-OTSG is particularly serious, because the working condition is in the range of low and medium pressure. This paper presents research on density wave oscillations (DWO) in a typical countercurrent H-OTSG. Based on the steady-state calculation, the mathematical model of single-channel system was established, and the transfer function was derived. Using Nyquist stability criterion of the single variable, the stability cases were studied with an in-house computer program. According to the analyses, the impact law of the geometrical parameters to the system stability was obtained. RELAP5/MOD3.2 code was also used to simulate DWO in H-OTSG. The theoretical analyses of the in-house program were compared to the simulation results of RELAP5. A correction factor was introduced to reduce the error of RELAP5 when modeling helical geometry. The comparison results agreed well which showed that the correction is effective.http://dx.doi.org/10.1155/2016/3071686 |
| spellingShingle | Junwei Hao Yaoli Zhang Jianxiang Zheng Zhiwei Zhou Xuanyu Sheng Gang Hong Kai Ye Ning Li Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator Science and Technology of Nuclear Installations |
| title | Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator |
| title_full | Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator |
| title_fullStr | Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator |
| title_full_unstemmed | Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator |
| title_short | Analysis of Density Wave Oscillations in Helically Coiled Tube Once-Through Steam Generator |
| title_sort | analysis of density wave oscillations in helically coiled tube once through steam generator |
| url | http://dx.doi.org/10.1155/2016/3071686 |
| work_keys_str_mv | AT junweihao analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT yaolizhang analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT jianxiangzheng analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT zhiweizhou analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT xuanyusheng analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT ganghong analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT kaiye analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator AT ningli analysisofdensitywaveoscillationsinhelicallycoiledtubeoncethroughsteamgenerator |