CAJ | 학술논문

通过CCHE2 D平面二维水沙数学模型,采用非线性k-ε紊流闭合模型,有限元法离散控制方程和时间行进格式求解方程对塔里木河乌斯满枢纽模型进行二维水流特性数值模拟. 分析了枢纽上下游水流水面形态变化、断面流速变化以及水位高程变化. 探讨了引水闸及泄洪闸对计算河段水流流态的影响. 将各典型断面水面高程变化与物理模型试验实测值进行对比,得到二者水面变化趋势基本一致. 结果表明:CCHE软件能较好地运用于引水枢纽工程水流运动的数值模拟.
통과CCHE2 D평면이유수사수학모형,채용비선성k-ε문류폐합모형,유한원법리산공제방정화시간행진격식구해방정대탑리목하오사만추뉴모형진행이유수류특성수치모의. 분석료추뉴상하유수류수면형태변화、단면류속변화이급수위고정변화. 탐토료인수갑급설홍갑대계산하단수류류태적영향. 장각전형단면수면고정변화여물리모형시험실측치진행대비,득도이자수면변화추세기본일치. 결과표명:CCHE연건능교호지운용우인수추뉴공정수류운동적수치모의.
Through CCHE2D two-dimensional water and sediment mathematical model ,the paper used the nonlinear k -εturbulence closure model , discrete control equation of finite element method and sol-ving equation of time traveling format to simulate the two -dimensional flow characteristics for Wusiman project model of Tarim River .Iit analyzed the changes of water surface morphology , velocity and water level elevation in upper and downstream of the project .It discussed the impact of water diversion sluice and sluice gate on flow pattern at calculation section .Furthermore,it compared the elevation change of water level every typical section with the test value of physical model .The comparison result shows that the trend of water level change of two methods is basic in agreement .The numerical simulation shows that CCHE software can be better used in the numerical simulation of water flow movement in water diversion hub.