Author/Authors :
Kanemura، نويسنده , , Takuji and Yoshihashi-Suzuki، نويسنده , , Sachiko and Kondo، نويسنده , , Hiroo and Sugiura، نويسنده , , Hirokazu and Yamaoka، نويسنده , , Nobuo and Ida، نويسنده , , Mizuho and Nakamura، نويسنده , , Hiroo and Matsushita، نويسنده , , Izuru and Muroga، نويسنده , , Takeo and Horiike، نويسنده , , Hiroshi، نويسنده ,
Abstract :
The characteristics of the surface waves on a high-speed liquid lithium wall jet were examined in a Li circulation loop at Osaka University for the International Fusion Materials Irradiation Facility (IFMIF). Surface fluctuations were measured by a contact-type liquid level sensor at 175 mm downstream from the nozzle exit, which corresponds to the deuteron beam’s axis in the IFMIF, and observed with a high-speed video (HSV) camera. Both the observation and measurement results indicated that the surface fluctuations were composed of various scale turbulent fluctuations. The measurement results especially showed good agreement with the log-normal distribution which is one of the turbulent intermittency theories. The dominant wavelength was found to be shorter with increase in the flow velocity, and reached approximately 4 mm at the velocity of 15 m/s, which gave close agreement with the visually observed wavelength.
