Author(s): Kwonkyu Yu; Byungman Yoon
Linked Author(s): Byungman Yoon
Keywords: Turbulent flow; Velocity profile; Inner region; Law of the wall; Log-law
Abstract: A single formula that describes the velocity profile of the inner region of the turbulent flow on a smooth bed was proposed. This formula has a form of the traditional log-law multiplied by a damping function. Introducing only one additional parameter, it can describe the whole inner range nicely. It approximates the law-of-the-wall in the vicinity of the bed and approaches to the log-law in the overlap region. The added parameter can be estimated very easily. It is not sensitive to the Reynolds number change and the velocity profile calculated by the formula does not change much due to the change of the parameter.
Year: 2005