Riemann-Problem and Level-Set Approaches for Two-Fluid Flow Computations. 2. Fixes for Solution Errors Near Interfaces. Modelling, Analysis and Simulation.

摘要

Fixes are presented for the solution errors (pressure oscillations) that may occur near two-fluid interfaces when applying a capturing method. The fixes are analyzed and tested. For two-fluid flows with arbitrarily large density ratios, a variant of the ghost-fluid method appears to be a perfect remedy. Results are presented for compressible water-air flows. The results are promising for a further elaboration of this important application area. The paper contributes to the state-of-the-art in computing two-fluid flows.