Parallel Accelerated Fifth-Order WENO Scheme-Based Pipeline Transient Flow Solution Model

The water hammer phenomenon is the main problem in long-distance pipeline networks. MOC (Method of characteristics) and finite difference methods lead to severe constraints on mesh Courant number, while volume method second-order Godunov scheme has limited intermittent capture capability. These will produce numerical dissipation, affecting computational efficiency at low numbers. Based lax-Friedrichs flux splitting method, combined with upstream downstream virtual grid boundary conditions, this paper uses high-precision fifth-order WENO reconstruct interface establishes a model for solving transient flow pipeline. adopts GPU parallel acceleration technology improve program’s efficiency. results show that maintains excellent performance excitation without spurious oscillations even number. Simultaneously, high degree flexibility meshing due insensitivity number grids can be significantly reduced higher obtained compared scheme. Furthermore, analyzes effect different grids. Accordingly, technique increases increase This support efficient accurate fast simulation prediction non-constant processes systems.