Abstract
Free surface flow has been the subject of numerous research efforts in industrial fields like power engineering, chemical engineering, civil engineering and environmental studies. Free surface flow has been studied from a numerical investigation point. In the SP-VOF model, interface-tracking calculation has been simplified by approximating cubic cells to spherical ones. Free surface flow in a channel with both open and closed sections was calculated by using the present method. The calculated results provided reliable liquid velocities compared with observed velocity distribution. The present method was applied to simulation of a three-dimensional dam break. It can calculate the complex free surface flow of water jumping over a barrage and scattering blobs from break waves.