Surface wave growth characteristics of the high speed liquid Li flow

Characteristics of surface oscillation on high speed liquid Li jet

“…This growth is similar to that measured with using old deteriorated nozzle [5]. While in the new nozzle, the flow just downstream of it, that is very smooth and flat, but the waves are found to grow towards downstream by the similar manner in the both nozzle case, irrespective of the smoothness on the nozzle edges.…”

“…Contact frequency which is defined as the number of contact per unit time was calculated from the contact signal between the probe and Li surface [4,5]. Measured signals of ON-OFF number were accounted in every probe height.…”

“…and to research the high speed free surface behavior and the hydraulics associated with the Li flow. An electro-contact probe apparatus was designed to study the hydraulic stability of the free surface behavior [3][4][5]. In these studies, it was shown that free surface fluctuations at a location 175 mm downstream from the nozzle exit, which corresponds to the center of beam footprint 150-200 mm on the IFMIF target flow, were composed of turbulent components with various wavelengths.…”

Certification of contact probe measurement of surface wave of Li jet for IFMIF

“…So the Li jet must be stable in the velocity range from 10 to 20 m/s. Characteristics of the Li jet were studied experimentally using the liquid Li circulation facility at Osaka University [4,5]. In the experiment, a probe apparatus is mainly used to obtain knowledge http://dx.doi.org/10.1016/j.fusengdes.2015.04.035 0920-3796/© 2015 Elsevier B.V. All rights reserved.…”