http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Byun Sang-Min,Na Yong-Su,Chung Kyoung-Jae,Kim Deok-Kyu,Lee Sangjun,Lee Chanyoung,Lee Jaegon,Ryu Jonghyeon 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.79 No.9
This paper deals with a newly developed resistive magnetohydrodynamic code, STHENO, for X-pinch analyses on 3D (x, y, z) and 2D (r, z) geometry. The single-fluid two-temperature model is adopted by assuming collisional plasmas. The thermodynamic parameters for various wire materials are employed from the corrected Thomas–Fermi model with the ionization potential in STHENO. The 2D results, which is initially assumed the hollow conical structure for X-pinch, demonstrates the development of the micron Z-pinch and the plasma instability of m = 0. These results are compared with the experiment in Seoul National University, and show a good agreement in the time evolution of the radiation power. The 3D result with STHENO is also found to capture the magnetic field reversal structure and the jet formation.
자기유체역학 코드를 이용한 축 대칭 엑스 핀치 플라즈마 구조의 2차원 전산해석
변상민,나용수,정경재,김덕규,이상준,이찬영,함승기,류종현,Byun, Sangmin,Na, Yong-Su,Chung, Kyoung-Jae,Kim, Deok-Kyu,Lee, Sangjun,Lee, Chanyoung,Ham, Seunggi,Ryu, Jonghyeon 한국군사과학기술학회 2021 한국군사과학기술학회지 Vol.24 No.2
This paper deals with the computational work to characterize the formation and pinching of a plasma in an X-pinch configuration. A resistive magnetohydrodynamic model of a single fluid and two temperature is adopted assuming a hollow conical structure in the (r,z) domain. The model includes the thermodynamic parameter of tungsten from the corrected Thomas-Fermi EOS(equation of state), determining the average ionization charge, pressure, and internal energy. The transport coefficients, resistivity and thermal conductivity, are obtained by the corrected Lee & More model and a simple radiation loss rate by recombination process is considered in the simulation. The simulation demonstrated the formation of a core-corona plasma and intense compression process near the central region which agrees with the experimental observation in the X-pinch device at Seoul National University. In addition, it confirmed the increase in radiation loss rate with the density and temperature of the core plasma.