CAJ | 학술논문

根据气水两相间热质传递原理，利用Fluent数值计算软件建立了APl000核电机组用20000m。淋水面积巨型冷却塔的三维计算模型，对双曲线塔筒的母线方程中的特征值及喉部半径的最优取值进行了计算验证，综合分析了特征值及喉部半径对塔内流场、进塔风量、蒸发水量和平均出塔水温的影响，得到了210m高巨型冷却塔的最优型体结构参数．计算结果表明：喉部半径与塔底半径的比值r0／r2=0．6--0．7、塔筒母线方程中的曲率特征值a=0．17～0．18时，冷却塔运行最优．
근거기수량상간열질전체원리，이용Fluent수치계산연건건립료APl000핵전궤조용20000m。림수면적거형냉각탑적삼유계산모형，대쌍곡선탑통적모선방정중적특정치급후부반경적최우취치진행료계산험증，종합분석료특정치급후부반경대탑내류장、진탑풍량、증발수량화평균출탑수온적영향，득도료210m고거형냉각탑적최우형체결구삼수．계산결과표명：후부반경여탑저반경적비치r0／r2=0．6--0．7、탑통모선방정중적곡솔특정치a=0．17～0．18시，냉각탑운행최우．
Based on heat and mass transfer theory of air-water two phase flow, a 3D numerical model was established using Fluent software for the cooling tower with 20 000 m2 spray area of an AP1000 nuclear power plant. The characteristic value of generatrix equation for a hyperbola cooling tower and its optimized throat radius were calculated, while their influences on the flow field, inlet air flow, evaporation rate and outlet water temperature studied, during which optimal structural parameters of the 210 m high tower were obtained. Results show that optimal operation performance may be achieved for the cooling tower at a radius ratio of throat to bottom in 0.6-0.7, and a characteristic value of generatrix equation in 0. 17-0. 18.