A novel domain overlapping strategy for the multiscale coupling of CFD with 1D system codes with applications to transient flows

As expected, the results produced by the two methods were found to be identical once numerical convergence is achieved and consistent with the standalone STAR-CCM+ solution in both steady state and transient cases. However, the domain overlapping method was found to achieve convergence at larger integration time steps than the domain decomposition approach and exhibited superior convergence and numerical stability characteristics in both steady state and transient scenarios.