Two-dimensional simulation of wave propagation in a three-pipe junction

The modelling of wave propagation in complex pipe junctions is one of the b iggest challenges for simulation codes, particularly those applied to flows in engine manifolds. In the present work an inviscid two-dimensional model , using an advanced numerical scheme, has been applied to the simulation of short-wave propagation through a three-pipe junction; the results are comp ared with corresponding schlieren images and measured pressure-time histori es. An approximate Riemann solver is used in the shock-capturing finite vol ume scheme and the influence of the order of accuracy of the solver and the use of adaptive mesh refinement are investigated The code can successfully predict the evolution and reflection of the wave fronts at the junctions w hilst the run time is such as to make it feasible to include such a model a s a local multi-dimensional region within a one-dimensional wave-action sim ulation of flow in engine manifolds.