Design and Analysis of a Divertor Langmuir Probe for ITER. (17th February 2019)

• Record Type: Journal Article
• Authors: Jin, Yuzhong; Zhao, Wei; Watts, Christopher; Gunn, James P.; Zhong, Guangwu; Liu, Xiang
• Is Part Of: Fusion science and technology. Volume 75:Number 2(2019)
• Page Start: 120
• Page End: 126
• Publication Date: 2019-02-17
• Subjects: Divertor Langmuir probe -- ANSYS -- temperature field -- thermal stress; Fusion reactors -- Periodicals; Nuclear fusion -- Periodicals; Fusion reactors; Nuclear fusion; Periodicals; 621.48405
• DOI: 10.1080/15361055.2018.1520577
• Languages: English
• ISSNs: 1536-1055

Abstract

Abstract: An all-welded ITER divertor Langmuir probe (DLP) model was analyzed by ANSYS 17.0. Temperature field and surface convective heat transfer were obtained by fluid analysis using ANSYS/CFX under both steady-state (10 MW/m 2 ) and slow transient-state (20 MW/m 2 for 10 s) working conditions. Mechanical analysis was performed with the temperature field as the preloading condition. The equivalent von-Mises stress and plastic strain distribution have been obtained. The analyzed results show that the DLPs would withstand very high temperature, which can reach 1852°C mainly owing to the extremely high heat flux as well as photon irradiation. The maximum temperature of the copper connection between the DLP and the monoblock would be 792°C, demonstrating that the bonding structure would not be destroyed. All the materials except the alumina pipe have undergone plastic yield analysis, implying that a low cycle strain-fatigue analysis needs to be done in the near future.