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KSTAR(Korea Superconducting Tokamak Advanced Research) 냉각 시스템에 대한 열해석 연구
김홍원(H. W. Kim),하지수(J. S. Ha),김대순(D. S. Kim),이종석(J. S. Lee),최창호(C. H. Choi) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
A study on the engineering design and numerical thermo-hydraulic analysis for KSTAR TF coil structure<br/> cooling system has been conducted. The numerical analyses have been done to verify the engineering design<br/> of cooling using the commercial code, FLUENT and in-house code for calculating helium properties which<br/> varies with cooling tube’s heat transfer. Through the engineering design process based on the steady heat<br/> balance concepts, the circular stainless steel tube with inner diameter of 4 mm for TF coil has been selected as<br/> cooling tube. From normal operation mode analysis results, total 28 cooling tubes were finally chosen. Also,<br/> three dimensional cool down analysis for TF coil with designed cooling tube was satisfied with next three<br/> design criteria. First is cooling work termination within a month, second is maximum temperature difference<br/> within 50 K in TF coil structure and third is exit helium pressure above 2 bar. Consequently, these cool down<br/> scenario results can afford to adopt as operating scenario data when KSTAR facilities operate.