http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
차재은(Jae-Eun Cha),임인철(In-Cheol Lim),심철무(Chul-Muu Sim),김병호(Byung-Ho Kim),이태호(Tae-Ho Lee),사이토(Yasushi Saito) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
The flow-field of a liquid-metal system is very important for the safety analysis and the design of the steam generator of liquid-metal fast breeder reactor. Dynamic neutron radiography (DNR) is suitable for a visualization and measurement of a liquid metal flow and a two-phase flow in a metallic duct. However, the three dimensional DNR techniques is not enough to obtain the velocity information in the wide channel up to now. In this research, a high speed DNR technique was applied to visualize the heavy liquid-metal flow field in the narrow channel with the HANARO-beam facility. The images were taken with a high frame-rate neutron radiography at 250 fps and analyzed with a Particle Image Velocimetry(PIV) method. The images were compared with the results of the commercial CFX code to study the feasibility of DNR technique for the measuring the heavy liquid-metal flow field. The PIV images could discern the turbulent vortex flow in the two-dimensional narrow channel.
Measurement of Two-Phase Flow with a High Frame-Rate Dynamic Neutron Radiography in HANARO Reactor
Jae-Eun Cha(차재은),In-Cheol Lim(임인철),Chul-Muu Sim(심철무),Hee-Ryoung Kim(김희령),Byung-Ho Kim(김병호) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A dynamic neutron radiography(DNR) has a complementary characteristics to X-ray radiography and is suitable for a visualization and measurement of a multi-phase flow research in a metallic duct and a liquid metal flow. Two kinds of experiments were conducted to visualize the water-air two-phase flow and the liquid-metal two-phase flow. The void fraction and the two-phase flow patterns in a channel simulating the HANARO fuel channel were investigated in the D₂O-air two-phase condition. The DNR technique was also applied to visualize the flow field in the gas-liquid metal two-phase flow with the HANARO-beam facility. The two-phase flow images were taken at various combinations of the liquid flow and gas flow with a high frame-rate neutron radiography at 1000 fps. The study showed that the dynamic neutron radiography is a good technique to measure the two-phase flow behavior in the complex rod-bundle geometry and the liquid-metal two-phase flow.