Simulation and Numerical Calculation on Pipeline Leakage Process

This paper discusses the simulation and numerical calculation on pipeline leakage process. At first it proposes the basic equations of transient flow, and describes the solution process based on the finite difference method and characteristic line method. It illustrates the handling of friction term, a new approach of leakage point boundary constrain, the boundary conditions of the start node and the end node as well. Finally, the simulation of pipeline leakage has been carried out with an example, and the variations of pressure and flow in the start node and the end node are obtained when the leakage occurs, which provided a theoretical basis for recognizing leakage.