Numerical Analysis of Pressure and Velocity Distributions for a Pulsating Turbulent Flow in a Circular Tube Containing a Slightly Compressible Fluid

Abstract

Approximate equations for a pulsating turbulent flow in a circular tube containing a slightly compressible fluid are numerically calculated by the method of characteristics and finite difference. Axial distributions of pressures and velocities along the pipe axis and a cross-sectional distribution of velocities are computed by using a time-dependent friction velocity or time-independent one. Pressure and velocity distributions calculated at various frequencies are shown schematically, and those calculated with a time-dependent friction velocity agree well with experimental ones.