Page 178 - Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors

150 Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors

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Q

1 Channel wall
2 Sleeve at channel
3 Front plate for acoustic transmission
4 Probe socket
5 Probe duct
6 Spring
7 Sleeve nut
8 Knurled nut
9 Transducer probe

Fig. 3.5.2 Technical realization of the acoustic access for an LBE pipe flow by means of a
specific probe adapter.

simultaneously by a high-speed camera. A good agreement in the variation of the bub-
ble diameter and the tilt of the bubble axis was found (Richter et al., 2015). A similar
result was also obtained in the eutectic alloy GaInSn where the bubble was recorded
by means of X-ray radioscopy (Ratajczak et al., 2017). Additionally, the effect of a
static horizontally applied magnetic field to the rising of the bubble was investigated
(Richter et al., 2017). If the magnetic field is increased, the bubble was rising on a
nearly straight path. In order to detect bubble chains and bubble swarms, the ultra-
sound transducers have to be rearranged in such a way that the entire horizontal cross
section of the container is covered.