CAJ | 학술논문

基于RNG k―ε紊流模型，雷诺时均N―S方程，运用商用CFD软件对双向竖井贯流泵装置进行三维流动数值模拟及水力性能优化设计，通过调整竖井及直管式流道型线，总体性能较初设方案得到了较大的上升。计算了正反向运行时泵装置各分段的水力损失，并给出了三维柱状图，定性分析了流量和环量对竖井和直管式流道水力损失的影响，通过比较正反向运行的流线图解释了竖井后置时水力损失较大的原因。
기우RNG k―ε문류모형，뢰낙시균N―S방정，운용상용CFD연건대쌍향수정관류빙장치진행삼유류동수치모의급수력성능우화설계，통과조정수정급직관식류도형선，총체성능교초설방안득도료교대적상승。계산료정반향운행시빙장치각분단적수력손실，병급출료삼유주상도，정성분석료류량화배량대수정화직관식류도수력손실적영향，통과비교정반향운행적류선도해석료수정후치시수력손실교대적원인。
Based on the RNG k―εturbulent model and Reynolds Navier―stokes equation ,the hydraulic performance optimization of the bidirectional shaft tubular pumping station is simulated with the commercial CFD software ,the performance is better improved than the original case by adjusting the hull lines of the flow channel .The hydraulic loss of each part in the pumping station is calculated and showed by three―dimensional histogram ,The flow rate and circulation which affects the hydraulic loss of the flow channel of shaft and straight is analyzed .The reason why the hydraulic loss of shaft rear―positioned tubular pump system is larger is explained by comparing the flow chart of the bidirectional shaft tubular pumps .