水资源与水工程学报
水資源與水工程學報
수자원여수공정학보
JOURNAL OF WATER RESOURCES AND WATER ENGINEERING
2014年
3期
43-47
,共5页
丁坝绕流%湍流%水力特性%数值模拟
丁壩繞流%湍流%水力特性%數值模擬
정패요류%단류%수력특성%수치모의
spur dike flow%turbulence%hydraulic characteristics%numerical simulation
采用两相流混合模型，并选取Realizable k -ε湍流模型封闭两相流时均方程，对梯型断面明渠淹没丁坝绕流水力特性进行三维数值模拟。速度与压力耦合方程组求解时使用半隐式SIMPLE（ Semi-Implicit Method for Pres-sure-Linked Equations ）算法，模拟自由水面采用了VOF （ Volume of Fluid ）法。通过模拟得到了水面线、流速等水力参数的分布规律。模拟结果与实测资料的对比表明：两者吻合较好，VOF方法和Realizable k-ε模型的耦合求解能够很好地模拟明渠淹没丁坝绕流的水力特性，为丁坝的设计、布置与施工提供理论基础支持。
採用兩相流混閤模型，併選取Realizable k -ε湍流模型封閉兩相流時均方程，對梯型斷麵明渠淹沒丁壩繞流水力特性進行三維數值模擬。速度與壓力耦閤方程組求解時使用半隱式SIMPLE（ Semi-Implicit Method for Pres-sure-Linked Equations ）算法，模擬自由水麵採用瞭VOF （ Volume of Fluid ）法。通過模擬得到瞭水麵線、流速等水力參數的分佈規律。模擬結果與實測資料的對比錶明：兩者吻閤較好，VOF方法和Realizable k-ε模型的耦閤求解能夠很好地模擬明渠淹沒丁壩繞流的水力特性，為丁壩的設計、佈置與施工提供理論基礎支持。
채용량상류혼합모형，병선취Realizable k -ε단류모형봉폐량상류시균방정，대제형단면명거엄몰정패요류수력특성진행삼유수치모의。속도여압력우합방정조구해시사용반은식SIMPLE（ Semi-Implicit Method for Pres-sure-Linked Equations ）산법，모의자유수면채용료VOF （ Volume of Fluid ）법。통과모의득도료수면선、류속등수력삼수적분포규률。모의결과여실측자료적대비표명：량자문합교호，VOF방법화Realizable k-ε모형적우합구해능구흔호지모의명거엄몰정패요류적수력특성，위정패적설계、포치여시공제공이론기출지지。
The paper used two-phase gas-liquid model and 3 D Realizable k-ε turbulence model to nu-merically simulate the hydraulic characteristics of flow for submerged spur dike .The SIMPLE ( Semi-Im-plicit Method for Pressure-Linked Equations ) algorithm was used for the solution of velocity and pressure . The VOF ( Volume of Fluid ) method was used to simulate the free surface .The distribution law of hydrau-lic factors such as water surface profile and flow velocit was obtained by simulation .The comparison of the simulation result with the measured data shows a good agreement .The research indicates that the coupled solution of VOF method and 3 D Realizable k-εturbulence model can well simulate the hydraulic charac-teristics of flow around submerged spur dike on open channel , which can provide theoretical support for the design , layout and construction of similar spur dikes .
