CAJ | 학술논문

针对导流洞区别于常规尾水洞的水力特性，在分析总结明满流数学计算方法的基础上，采用狭缝法的特征隐式格式法建立模型，对尾水洞中明满流过渡过程进行数值模拟。结合工程实例，采集过渡过程中监测点的压力和水位极值，并利用该电站引水发电系统整体水工模型试验进行验证。对比分析得到数值计算结果与模型试验结果一致，表明该数学模型适用于导流洞改建发电尾水洞明满流过渡过程的数值模拟。
침대도류동구별우상규미수동적수력특성，재분석총결명만류수학계산방법적기출상，채용협봉법적특정은식격식법건립모형，대미수동중명만류과도과정진행수치모의。결합공정실례，채집과도과정중감측점적압력화수위겁치，병이용해전참인수발전계통정체수공모형시험진행험증。대비분석득도수치계산결과여모형시험결과일치，표명해수학모형괄용우도류동개건발전미수동명만류과도과정적수치모의。
The characteristics of the diversion tunnel are distinguished from the conventional tailrace tunnel and the hydraulic phenomenons during the transition between the free surface and pressure flow in the tailrace tunnel rebuilt from diversion tunnel are much more complicat-ed,which include trapped air bubbles,air exhaust and suction. A numerical model was established to simulate the free surface-pressurized flow by using the slit method and the characteristic implicit method. Combining with a project example,the model was programmed and the comparison of results of the numerical calculation and the model tests show that the model is suitable for the kind of cases.