In fluid-structure interactions and fluid simulations, like incompressible two-phase flows involving high viscosity and density ratios, interface capturing and tracking is considered as a very challenging problem and has a strong impact on industrial applications. Usually, an adaptive grid is used to resolve the problem as well as to track the interface. In this paper, we describe an adaptive s...

To simulate the flow around an object, we can replace the object with the fluid enclosed by a singular force. We can then simulate the flow on a fixed domain with a fluid-fluid interface supporting the singular force. In this paper, we present a boundary condition capturing approach to determine the singular force for a 3D rigid object. We apply a discontinuous body force to enforce the rigid m...

High-order accurate shock-capturing schemes are capable of properly resolving discontinuities with correct wave speeds in single-fluid Riemann problems. However, when different fluids are present, oscillations develop at interfaces. A class of existing interface-capturing methods that suppress these oscillations is based on firstand second-order accurate reconstructions with Roe solvers. In thi...

Abstract In this paper we extend the application of unstructured high-order finite-volume central-weighted essentially non-oscillatory (CWENO) schemes to multicomponent flows using interface capturing paradigm. The developed method achieves accurate solution in smooth regions, while providing oscillation free solutions at discontinuous regions. are inherently compact sense that central stencils...

Multiphase, compressible and viscous flows are of crucial importance in a wide range scientific engineering problems. Despite the large effort paid last decades to develop accurate efficient numerical techniques address this kind problems, current models need be further improved realistic applications. In context, we propose approach simulation multiphase, where an incompressible phase interact...