The occurrence of Steam-Water Co-Current Flow (SWCOCF) in the AP1000 Pressurizer Surge Line (PZR SL) is an important phenomenon during the depressurization stage of the Small Break Loss-of-Coolant Accidents (SB-LOCAs), and the predictions of SWCOCF pressure drop in PZR SL are important issues in the AP1000 reactor safety analyses. To investigate the pressure drop characteristics of SWCOCF in the PZR SL assembly of AP1000, a PZR SL test model made of stainless steel is designed with scaling ratio of 1:9.15, and a test loop is also established to supply SWCOCF conditions for the experiments. The test section is mainly composed of a long inclined tube with a short acrylic visual section, a whole surge line tube, and a vertical section. The SWCOCF pressure drop experiments are conducted with pressure ranging from 0.1MPa to 0.24MPa and vapor mass fraction from 0.02 to 0.5. The research results show that: the whole surge line two-phase friction multiplier increases with the increasing of steam fraction, and decreases with the increasing of pressure. A prediction model of two-phase friction multiplier for the PZR SL is developed based on the Martinelli-Nelson method, which can predict the tests data very well.
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2017 25th International Conference on Nuclear Engineering
July 2–6, 2017
Shanghai, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5784-7
PROCEEDINGS PAPER
Experimental Study on the Steam-Water Co-Current Flow Friction Multiplier of the AP1000 Surge Line Available to Purchase
Jiangtao Yu,
Jiangtao Yu
Xi'an Jiaotong University, Xi'an, China
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Dalin Zhang,
Dalin Zhang
Xi'an Jiaotong University, Xi'an, China
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Leitai Shi,
Leitai Shi
Xi'an Jiaotong University, Xi'an, China
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Zhiwei Wang,
Zhiwei Wang
Xi'an Jiaotong University, Xi'an, China
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Wenxi Tian,
Wenxi Tian
Xi'an Jiaotong University, Xi'an, China
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Guanghui Su,
Guanghui Su
Xi'an Jiaotong University, Xi'an, China
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Suizheng Qiu
Suizheng Qiu
Xi'an Jiaotong University, Xi'an, China
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Jiangtao Yu
Xi'an Jiaotong University, Xi'an, China
Dalin Zhang
Xi'an Jiaotong University, Xi'an, China
Leitai Shi
Xi'an Jiaotong University, Xi'an, China
Zhiwei Wang
Xi'an Jiaotong University, Xi'an, China
Wenxi Tian
Xi'an Jiaotong University, Xi'an, China
Guanghui Su
Xi'an Jiaotong University, Xi'an, China
Suizheng Qiu
Xi'an Jiaotong University, Xi'an, China
Paper No:
ICONE25-66893, V006T08A063; 8 pages
Published Online:
October 17, 2017
Citation
Yu, J, Zhang, D, Shi, L, Wang, Z, Tian, W, Su, G, & Qiu, S. "Experimental Study on the Steam-Water Co-Current Flow Friction Multiplier of the AP1000 Surge Line." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 6: Thermal-Hydraulics. Shanghai, China. July 2–6, 2017. V006T08A063. ASME. https://doi.org/10.1115/ICONE25-66893
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