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四面体框架群(TFR)防护方法在我国的河流工程中正得到越来越多的应用,然而由于其复杂的几何形状,采用传统的量测手段准确量测四面体框架群内的流场遇到极大障碍,这限制了研究者对四面体防护方法的深入理解.本文利用CFD通用代码Fluent,建立了用于计算四面体框架群流速场和阻力大小的三维水动力数值模型.采用可实现k-ε紊流模型封闭雷诺时均方程.研究表明该数值模型可以有效补充物理试验研究工作,有助于理解四面体框架复杂的三维流场和防护机理,分别给出了阻力系数CD与雷诺数Re以及升力系数CL与雷诺数Re的关系图.
The tetrahedral framework (TFR) protection method is getting more and more applications in the river engineering of our country. However, due to its complex geometry, the traditional measurement methods to accurately measure the flow field in the tetrahedral framework Which limits the researchers’ understanding of the tetrahedral protection methods.This paper uses the CFD code Fluent to establish a three-dimensional hydrodynamic numerical model for calculating the velocity field and the resistance size of the tetrahedron frame group.Using the k -ε turbulent model closed Reynolds-averaged equation.The results show that the numerical model can effectively supplement the physical experimental research, help to understand the complex three-dimensional flow field and the protective mechanism of tetrahedral framework, respectively, the resistance coefficient CD and Reynolds number Re and lift coefficient CL and Reynolds number Re relationship diagram.