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Sugimoto, Taro*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Kurihara, Akikazu; Takata, Takashi; Ohshima, Hiroyuki
Nuclear Engineering and Design, 380, p.111306_1 - 111306_11, 2021/08
Times Cited Count：3 Percentile：45.99(Nuclear Science & Technology)Liquid droplet entrainment by a high-speed gas jet is a key phenomenon for evaluation of sodium-water reaction. In this study, a visualization experiment for liquid droplet entrainment by an air jet in a water pool by using frame-straddling method was carried for development of an entrainment model in a sodium-water reaction analysis code. This experiment successfully provided clear images that captured generation and movement of droplets. Droplet diameter and moving speed were obtained at different locations and gas jet velocities from image processing. The measured data contributes phenomena elucidation and model development.
Saito, Masafumi*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Kurihara, Akikazu; Takata, Takashi*; Ohshima, Hiroyuki
Proceedings of 28th International Conference on Nuclear Engineering (ICONE 28) (Internet), 7 Pages, 2021/08
In order to provide the data for validation and improvement of the sodium-water reaction analysis code, a visualization experiment on liquid droplet entrainment in a high-pressure air jet submerged in a water pool was conducted. Diameter and velocity of entrained liquid droplets were successfully measured. The effect of a nozzle shape was elucidated.
Sugimoto, Taro*; Saito, Shimpei*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Ohshima, Hiroyuki
no journal, ,
A computational fluid dynamics code for a sodium-water reaction phenomenon in a steam generator of sodium-cooled fast reactors has been developed. In order to provide the data for validation of this code, the visualization experiment on liquid droplet entrainment in the high-pressure air jet submerged in the water pool was carried out. The experiment successfully elucidated the behavior, such as atomization of the relatively large diameter liquid droplet generated from the gas-liquid interface.
Sugimoto, Taro*; Abe, Yutaka*; Saito, Shimpei*; Kaneko, Akiko*; Uchibori, Akihiro; Ohshima, Hiroyuki
no journal, ,
A computational fluid dynamics code for a sodium-water reaction phenomenon in a steam generator of sodium-cooled fast reactors has been developed. In order to provide the data for validation of this code, the visualization experiment on liquid droplet entrainment in the high-pressure air jet submerged in the water pool was carried out. The experiment successfully elucidated the behavior, such as atomization of the relatively large diameter liquid droplet generated from the gas-liquid interface. The Sauter mean diameter estimated from the visualization images showed good agreement with the existing correlation.
Sugimoto, Taro*; Saito, Shimpei*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Takata, Takashi; Ohshima, Hiroyuki
no journal, ,
A computational fluid dynamics code for a sodium-water reaction phenomenon in a steam generator of sodium-cooled fast reactors has been developed. In order to provide the data for validation of this code, the visualization experiment on liquid droplet entrainment in the high-pressure air jet submerged in the water pool was carried out. The experiment successfully elucidated the velocity of the entrained liquid droplet.
Saito, Masafumi*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Kurihara, Akikazu; Takata, Takashi; Ohshima, Hiroyuki
no journal, ,
In order to provide the data for validation of a sodium-water reaction analysis code, a visualization experiment on liquid droplet entrainment in a high-pressure air jet submerged in a water pool was conducted. The relationship between diameter and velocity of the droplets was elucidated through this experiment.
Saito, Masafumi*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Kurihara, Akikazu; Takata, Takashi; Ohshima, Hiroyuki
no journal, ,
In order to provide the data for validation and improvement of the sodium-water reaction analysis code, a visualization experiment on liquid droplet entrainment in a high-pressure air jet submerged in a water pool was conducted. The diameter and velocity of the entrained liquid droplets were successfully measured and the effect of the nozzle shape was elucidated.
Saito, Masafumi*; Kaneko, Akiko*; Uchibori, Akihiro; Kurihara, Akikazu; Takata, Takashi*; Ohshima, Hiroyuki
no journal, ,
In order to provide the data for validation and improvement of the sodium-water reaction analysis code, a visualization experiment on liquid droplet entrainment in a high-pressure air jet submerged in a water pool was conducted. Diameter and velocity of entrained liquid droplets were successfully measured. The effects of a nozzle shape and a liquid level were elucidated.
Saito, Masafumi*; Kaneko, Akiko*; Abe, Yutaka*; Uchibori, Akihiro; Kurihara, Akikazu; Ohshima, Hiroyuki
no journal, ,
In order to provide the experimental data for validation and improvement of the sodium-water reaction analysis code, a visualization experiment on liquid droplet entrainment in a high-pressure air jet submerged in a water pool was carried out. Diameter and velocity of the entrained liquid droplets were successfully measured at different locations in the jet. This experiment indicated the possibility that the fluctuation of the jet boundary affects diameter, velocity, and generation rate of the liquid droplets.
Uchibori, Akihiro; Shiina, Yoshimi*; Kurihara, Akikazu; Okano, Yasushi; Saito, Masafumi*; Kaneko, Akiko*; Abe, Yutaka*
no journal, ,
In order to establish a safety evaluation method of a steam generator of sodium-cooled fast reactors, a computer program called SERAPHIM has been developed to calculate compressible multicomponent multiphase flow with sodium-water chemical reaction under tube failure accident. In this study, a numerical model for liquid droplet entrainment from an interface of the gaseous jet and its transport was validated through the analysis of experiment on vertical discharging of high-pressure air in a water pool. This model considers the mass, momentum, and energy conservation equations including the correlation of liquid droplet entrainment velocity. The numerical result showed the entrained liquid droplet phase was accelerated by the air jet. The calculated velocity of the liquid droplet falls within the dispersion of the measured data.
