Mechanical Behaviors of the FCI With Various Geometric Characteristics in Multi-Physics Fields
-
摘要: 流道插件(FCI)是ITER中包层模块的重要部件,起到电绝缘和热绝缘的作用,FCI的力学行为是对复杂的磁-热-流-固多物理场共同作用的响应.将有限体积法和有限元方法相结合,对包层流道中的流场、温度场以及FCI的应力应变场进行求解,分析了磁场效应对结构的影响,以及不同FCI壁厚和间隙流宽度等结构特征对包层的影响.计算结果表明,强磁场虽然会产生较强的MHD效应,但可以降低第一壁温度和FCI结构热应力;较厚的FCI可以降低第一壁上的最高温度,但也会增加FCI上的温度梯度和热应力;而较宽的间隙有利于降低第一壁上的最高温度,但会增加FCI的最大Mises应力.Abstract: The flow channel insert (FCI) is an indispensable component in the ITER. It serves as the thermal and electric insulator in the blanket module. The mechanical behaviors of the FCI were investigated under the coupling effects of magneto-thermo-fluid-mechanical fields. Numerical investigations based on the finite volume method and finite element method were applied. The velocity profiles, temperature distributions and structural stress states were analyzed. Influences by the magnetic field and geometric characteristics of the FCI on the blanket module were investigated. Results show that, a stronger magnetic field causes lower first-wall (FW) temperature and FCI thermal stresses despite leading to the MHD effects, a thicker FCI yields lower FW temperature yet higher FCI temperature gradient and thermal stresses, and a wider gap leads to lower FW temperature yet higher Mises stresses in the FCI.
-
Key words:
- multi-physics field /
- blanket module /
- FCI /
- thermal stress /
- fluid-structure interaction
-
[1] Holtkamp N. An overview of the ITER project[J].Fusion Engineering and Design,2007,82(5/14): 427-434. [2] Wong C P C, Abdou M, Dagher M, Katoh Y, Kurtz R J, Malang S, Marriott E P, Merrill B J, Messadek K, Morley N B, Sawan M E, Sharafat S, Smolentsev S, Sze D K, Willms S, Ying A, Youssef M Z. An overview of the US DCLL ITER-TBM program[J].Fusion Engineering and Design,2010,85(7/9): 1129-1132. [3] Smolentsev V S, Moreau R, Bühler L, Mistrangelo C. MHD thermofluid issues of liquid-metal blankets: phenomena and advances[J].Fusion Engineering and Design,2010,85(7/9): 1196-1205. [4] Smolentsev S, Cuevas S, Beltrn A. Induced electric current-based formulation in computations of low magnetic Reynolds number magnetohydrodynamic flows[J].Journal of Computational Physics,2010,229(5): 1558-1572. [5] WANG Hong-yan, TANG Chan. Preliminary analysis of liquid LiPb MHD flow and pressure drop in DWT blanket of FDS-I[J].Fusion Engineering and Design,2012,87(7/8): 1501-1505. [6] NI Ming-jiu, Munipalli R, Morley N B, Huang P, Abdou M A. A current density conservative scheme for incompressible MHD flows at a low magnetic Reynolds number—part I: on a rectangular collocated grid system[J].Journal of Computational Physics,2007,227(1): 174-204. [7] NI Ming-jiu, Munipalli R, Huang P, Morley N B, Abdou M A. A current density conservative scheme for incompressible MHD flows at a low magnetic Reynolds number—part II: on an arbitrary collocated mesh[J].Journal of Computational Physics,2007,227(1): 205-228. [8] NI Ming-jiu, LI Jun-feng. A consistent and conservative scheme for incompressible MHD flows at a low magnetic Reynolds number—part III: on a staggered mesh[J].Journal of Computational Physics,2012,231(2): 281-298. [9] Smolentsev S, Morley N B, Wong C, Abdou M. MHD and heat transfer considerations for the US DCLL blanket for DEMO and ITER TBM[J].Fusion Engineering and Design,2008,83(10/12): 1788-1791. [10] Vitkovsky I V, Golovanov M M, Divavin V A, Kirillov I R, Lipko A V, Malkov A A, Kartashev I A, Komarov V M, Ogorodnikov A P, Schipakin O L. Neutronic, thermal-hydraulic and stress analysis of RF lithium cooled test blanket module for ITER[J].Fusion Engineering and Design,2000,49/50: 703-707. [11] Sharafat S, Aoyama A, Morley N, Smolentsev S, Katoh Y, Williams B, Ghoniem N. Development status of a SiC-foam based flow channel insert for a US-ITER DCLL TBM[J].Fusion Science and Technology,2009,56(2): 883-891. [12] Sharafat S, Aoyama A, Ghoniem N, Williams B, Katoh Y. Heat testing of a prototypical SiC-foam-based flow channel insert[J].Plasma Science, IEEE Transactions on,2010,38(10): 2993-2998. [13] Ying A, Abdou M, Zhang H, Munipalli R, Ulrickson M, Sawan M, Merrill B. Progress on an integrated multi-physics simulation predictive capability for plasma chamber nuclear components[J].Fusion Engineering and Design,2010,85(7/9): 1681-1688. [14] LIU Song-lin, JIN Qiang, WANG Wei-hua, LI Ming. Updated thermal-mechanical analysis of DFLL-TBM for ITER[J].Fusion Engineering and Design,2011,86(9/11): 2347-2351. [15] Smolentsev S, Morley N B, Abdou M. Magnetohydrodynamic and thermal issues of the SiCf/SiC flow channel insert[J].Fusion Science and Technology,2006,50(1): 107-119. [16] Hunt J C R. Magnetohydrodynamic flow in rectangular ducts[J].Journal of Fluid Mechanics,1965,21(4): 577-590. [17] Smolentsev S, Wong C, Malang S, Dagher M, Abdou M. MHD considerations for the DCLL inboard blanket and access ducts[J].Fusion Engineering and Design,2010,85(7): 1007-1011. [18] Aiello G, Giancarli L, Golfier H, Maire J F. Modeling of mechanical behavior and design criteria for SiCf/SiC composite structures in fusion reactors[J].Fusion Engineering and Design,2003,65(1): 77-88. [19] Riccardi B, Fenici P, Frias Rebelo A, Giancarli L, Le Marois G, Philippe E. Status of the European R&D activities on SiCf/SiC composites for fusion reactors[J].Fusion Engineering and Design,2000,51/52: 11-22.
点击查看大图
计量
- 文章访问数: 972
- HTML全文浏览量: 88
- PDF下载量: 795
- 被引次数: 0