摘要
根据文[1]中给出的二维大涡模拟方程的离散形式及数值解法,编制了一套数值计算程序,并通过计算二维后阶湍流流动和双流道式污水泵叶轮内部流场的实例计算,验证了文[1]中推导出的方程的正确性、可解性,以及提供的数值解法的可行性和可靠性.经文中的实例计算,并把计算结果与实验实测结果相比较,令人十分满意.从而表明:二维大涡数值模拟既保持了原有三维形式的优点,又大大简化了三维求解对计算条件的苛刻要求,有望使大涡数值实现广泛的工程应用.
A set of computational programs of numerical simulation is build up in this paper based on the discrete form and numerical solution of 2D large eddy simulation equations given in . The equations and numerical solution given in this paper is verified by calculating both the 2D backstep turbulent flow and incompressible turbulent flow in doubleflowconduitssewage pump impeller in connection with the validity and solubility of the equations and the feasibility and reliability of the solution. It is shown by comparing the computational result with the experiment result that the result is very satisfactory. It shows also that the LES in 2D case not only maintains the advantages of that in 3D case but also lessens the solution conditions required by 3D case. It is expected that the LES will be widely used in engineering practice.
出处
《甘肃工业大学学报》
北大核心
2003年第2期56-58,共3页
Journal of Gansu University of Technology
