Thermal performance and 3D analysis of advanced mechanically joined divertor plate for LHD under steady state high heat flux
Thermal performance and 3D analysis of advanced mechanically joined divertor plate for LHD under steady state high heat flux
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稳态高热通量下 LHD 先进机械连接分流板的热性能和 3D 分析
DOI：
10.1016/s0920-3796(01)00260-5
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
O. Motojima
中科院分区：
文献类型：
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作者：
Y. Kubota;N. Noda;A. Sagara;R. Sakamoto;K. Yamazaki;T. Satow;O. Motojima
介绍了一种新型机械连接模块（MJM）在稳态高热流密度2.0 ~ 4.25 MW/m2下的热性能及热力学分析。先进的MJM设计用于大型螺旋装置（LHD）的螺旋分流板的下一个实验阶段。先进的MJM有一个统一的装甲/散热器，由碳/碳复合材料制成，不同于普通的MJM，有一个分离的铜散热器。为了评估先进MJM的热性能，在ACT测试设备上进行了高达5.4 MW/m2的短脉冲高热流密度测试和高达4.25 MW/m2的稳态高热流密度测试。在2.5 MW/m2的稳态高热流密度下，对先进的MJM进行了150次的热疲劳试验。在这些测试之后，尽管在热疲劳测试中装甲/散热器温度略有升高，但没有观察到装甲瓦的明显损伤和开裂。为了评估MJM装甲/散热器在稳态高热流密度试验中的热应力，并对其结构进行优化，采用三维CAD进行了热力学分析。
Thermal performances of an advanced mechanically joined module (MJM) under steady state high heat fluxes of 2.0–4.25 MW/m2and thermo-mechanical analysis are described. The advanced MJM was designed to apply for a helical divertor plate of a large helical device (LHD) at the next experimental phase II. The advanced MJM has a unified armor/heat sink made of carbon/carbon composite different from the normal MJM with a separated copper heat sink. To evaluate the thermal performance of the advanced MJM, short pulse high heat flux test up to 5.4 MW/m2and steady state high heat flux tests up to 4.25 MW/m2have been carried out using a test facility ACT. Moreover, the thermal fatigue test of the advanced MJM up to 150 cycles under steady state high heat flux of 2.5 MW/m2has been performed. After theses tests, no apparent damage and no cracking on the armor tile were observed although there was a little increase in the armor/heat sink temperature during the thermal fatigue test. To evaluate the thermal stress in the armor/heat sink of the MJM during steady state high heat flux test and to optimize the structure, thermo-mechanical analyses are done using a 3D CAD.