Unsteady Velocity Profiles in Laminar and Turbulent Water Hammer Flows

摘要: The behavior of unsteady velocity profiles in laminar and turbulent water hammer flows is numerically investigated. In this way, the governing equations for quasitwo-dimensional transient flow pipe are solved by using modified implicit characteristics method. A k-w turbulence model which accurate two-dimensional boundary layers under adverse favorable pressure gradients applied. numerical results both steady good agreement with experimental data. indicate that decelerating accelerating produced a wave cycle hammer. During deceleration flow, region reverse also strong formed near to wall. case hammer, very close wall compared Moreover, point inflection zero profile due problem. show does not move far from its initial location, while moves rapidly