基于PHOENICS的长输管道沟槽减阻数值模拟

Study of numerical simulation of drag reduction of long-distance pipeline groove based on PHOENICS

通过对湍流微分方程采用有限容积积分法进行离散化处理,对离散后的代数方程采用SIMPLEST算法实施计算求解,利用PHOENICS软件数值模拟了V形沟槽尖峰对湍流边界层特性的影响。模拟结果认为,沟槽的尺寸大小可能不是影响沟槽表面阻力的主要因素,而真正影响沟槽表面阻力的因素是无量纲化之后的槽间距s+,在相同的流动条件下,沟槽处的速度减小,壁面剪切力也随之减小。

By discretizing the turbulent differential equation with finite volumetric integral method, the discretized algebraic equation is calculated by means of SIMPLEST algorithm, and the influence of V shape groove peak on turbulent boundary feature is simulated with the PHOENICS software. Thesimulation results show that the groove size may not be the main factor for affecting the surface resistance of the groove, but the dimensionless groove clearance s+. Under the same flowing condition, the wall face shear force decreases with the decrease of speed at the groove.