Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (1): 2 doi: 10.1007/s41365-017-0349-x

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Thermodynamic analysis and simulation for gas baffle entrance collimator of EAST-NBI system based on thermo-fluid coupled method

Ling Tao, Chun-Dong Hu, Yuan-Lai Xie   

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
  • Contact: Ling Tao E-mail:palytao@ipp.ac.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (No. 11605234) and the Foundation of ASIPP (No. DSJJ-15- GC02).

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Ling Tao, Chun-Dong Hu, Yuan-Lai Xie. Thermodynamic analysis and simulation for gas baffle entrance collimator of EAST-NBI system based on thermo-fluid coupled method.Nuclear Science and Techniques, 2018, 29(1): 2     doi: 10.1007/s41365-017-0349-x
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Abstract:

The world’s first full Experimental Advanced Superconducting Tokamak (EAST) is designed with the auxiliary heating method of neutral beam injection (NBI) system. Beam collimators are arranged on both sides of the beam channel for absorbing the divergence beam during the beam transmission process in the EAST-NBI system. The gas baffle entrance collimator (GBEC) is a typical high-heat-flux component located at the entrance of gas baffle. An efficient and accurate analysis of its thermodynamic performance is of great significance to explore the working limit and to ensure safe operation of the system under a high-parameter steady-state condition. Based on the thermo-fluid coupled method, thermodynamic analysis and simulation of GBEC is performed to get the working states and corresponding operating limits at different beam extraction conditions. This study provides a theoretical guidance for the next step to achieve long pulse with high-power experimental operation and has an important reference to ensure the safe operation of the system.

Key words: Neutral beam injection, High-heat-flux component, Beam collimator, Thermo-fluid coupled method, Thermodynamic analysis