Air–water downscaled experiments and three-dimensional two-phase flow simulations of improved steam separator for boiling water reactor

Katono, Kenichi; Ishida, Naoyuki; Sumikawa, Takashi; Yasuda, Katsuhiro

doi:10.1016/j.nucengdes.2014.08.006

Cited by 34 publications

(2 citation statements)

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“…ere are many factors that affect the MCO with hydraulic conditions such as the distribution of the small droplets [5], flow pattern [6], film thickness [7], phase concentration and swirl intensity [8], and so on. Katono et al [9] focused on the two-phase flow characteristics and simulated the operating conditions by adjusting the quality and the twophase centrifugal force for boiling water reactors (BWR). ey obtained almost the same results of the MCO compared with those of the conventional separator in a 1/2 scaled air-water test loop.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the maximum allowable liquid flow rate was limited due to the small momentum when the air and the water were mixed in a vertical separator [10]. From the previous research, there was not a representative method, but this research followed Katono et al' [9] method and added the spray injection system, which is regarded as a conservative approach.…”

Section: Introductionmentioning

confidence: 99%

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Development and Experimental Validation for Quantifying the Moisture Carryover in a Moisture Separator Using an Air/Water Test Facility

Kim

Lee

et al. 2021

Science and Technology of Nuclear Installations

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The moisture carryover (MCO) of the primary separator in a steam generator is the most important design parameter to ensure high efficiency in a steam generator. There is an inherent limitation to experimentally evaluate the MCO under the prototype conditions. In this study, the air/water test facility was constructed based on the similarity law, and a new isokinetic system was developed to quantify the MCO. Several experiments were performed for the mass quality ranging from 0.315 to 0.382. The accuracy and versatility of the experimental method was verified experimentally using a full and half scale of separators. The test results were compared with the prototype results. It was proved to be a reliable experimental method for evaluating the MCO of the moisture separator.

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