Краткое описание

Characteristics of 3D turbulent flow features around inclined submerged spur dikes are numerically investigated using a non-linear k−ε model. A generalized curvilinear movable coordinate is employed to calculate the free surface oscillation and take into account the complex topography. The computations were performed under the conditions of the laboratory tests with PIV measurements performed by Tominaga et al (2001). Numerical results show that the amplitude of fluid oscillation around downstream inclined spur dikes is much larger than that around downstream inclined ones and the period of the oscillation is in compatible with the first mode of impinging shear layer.