The first wall of facing plasma of fusion reactor needs to bear high-intensity neutron irradiation and heat load, so it is difficult for ordinary materials to meet the requirements. It is an effective way to use the liquid metal as the first wall of facing plasma. Taking liquid metal as the first wall, it is necessary to solve the problem that how to evenly spread the liquid metal on the wall and study the heat transfer characteristics between liquid metal and the wall under a perpendicular magnetic field. Previous studies have shown that the structure of microchannel surface contributes to the even spreading of liquid metal. In this paper, liquid metal alloy GaInSn works as the working fluid. The flow pattern and heat transfer characteristics of the liquid metal in microchannel plate under the condition of uniform magnetic field and no magnetic field are studied experimentally. The influence of a perpendicular magnetic field on the flow pattern and heat transfer of liquid metal in a microchannel is studied by comparing the experimental results of two different working conditions.
LEI Tianyang
,
MENG Xu
,
WANG Zenghui
,
NI Mingjiu
. Experimental study of flow pattern and heat transfer of liquid metal in microchannel under the magnetic field[J]. Journal of University of Chinese Academy of Sciences, 2021
, 38(4)
: 459
-466
.
DOI: 10.7523/j.issn.2095-6134.2021.04.004
[1] 张一鸣,曾丽萍,沈欣媛,等. ITER计划与聚变能发展战略[J]. 核聚变与等离子体物理,2013,33(4):359-365.
[2] Narula M, Ying A, Abdou M A. A study of liquid metal film flow, under fusion relevant magnetic fields[J]. Fusion Science and Technology, 2005, 47(3):564-568.
[3] Priest E, Forbes T. Magnetic reconnection:MHD theory and applications[M]. Cambridge:Cambridge University Press, 2000:1-15.
[4] 齐天煜,阳倦成,倪明玖. 展向磁场作用下液态金属GaInSn多层膜流实验研究[J]. 中国科学院大学学报,2019,36(3):320-325.
[5] Xu W, Curreli D, Andruczyk D, et al. Heat transfer of TEMHD driven lithium flow in stainless steel trenches[J]. Journal of Nuclear Materials, 2013, 438:S422-S425.
[6] Fiflis P, Morgan T W, Brons S, et al. Performance of the lithium metal infused trenches in the magnum PSI linear plasma simulator[J]. Nuclear Fusion, 2015, 55(11):113004.
[7] Ruzic D N, Xu W, Andruczyk D, et al. Lithium-metal infused trenches (LiMIT) for heat removal in fusion devices[J]. Nuclear Fusion, 2011, 51(10):102002.
[8] Xu W, Fiflis P, Szott M, et al. Vertical flow in the thermoelectric liquid metal plasma facing structures (TELS) facility at Illinois[J]. Journal of Nuclear Materials, 2015,463:1181-1185.
[9] Xu W, Surla V, Jaworski M A, et al. Investigation of the heat transfer in TEMHD driven swirling lithium flow[J]. Journal of Nuclear Materials, 2011,415(Sup):S981-S984.
[10] Ren J, Hu J S, Zuo G Z, et al. First results of flowing liquid lithium limiter in HT-7[J]. Physica Scripta, 2014,T159:014033.
[11] Kaita R, Majeski R, Gray T, et al. Low recycling and high power density handling physics in the Current Drive Experiment-Upgrade with lithium plasma-facing components[J]. Physics of Plasmas, 2007, 14(5):056111.
[12] Hu J S, Zuo G Z, Ren J, et al. First results of the use of a continuously flowing lithium limiter in high performance discharges in the EAST device[J]. Nuclear Fusion, 2016, 56(4):046011.
[13] Zuo G Z, Hu J S, Maingi R, et al. Results from an improved flowing liquid lithium limiter with increased flow uniformity in high power plasmas in EAST[J]. Nuclear Fusion, 2019, 59(1):016009.
[14] 倪明玖,阳倦成,任东伟,等. 聚变堆相关的液态金属膜流初步实验研究[J].力学学报,2018,50(6):1379-1386.
