PROST: A Parabolic Reconstruction of Surface Tension for the Volume-of-Fluid Method
β Scribed by Yuriko Renardy; Michael Renardy
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 265 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0021-9991
No coin nor oath required. For personal study only.
β¦ Synopsis
Volume-of-fluid (VOF) methods are popular for the direct numerical simulation of time-dependent viscous incompressible flow of multiple liquids. As in any numerical method, however, it has its weaknesses, namely, for flows in which the capillary force is the dominant physical mechanism. The lack of convergence with spatial refinement, or convergence to a solution that is slightly different from the exact solution, has been documented in the literature. A well-known limiting case for this is the existence of spurious currents for the simulation of a spherical drop with zero initial velocity. These currents are present in all previous versions of VOF algorithms. In this paper, we develop an accurate representation of the body force due to surface tension, which effectively eliminates spurious currents. We call this algorithm PROST: parabolic reconstruction of surface tension. There are several components to this procedure, including the new body force algorithm, improvements in the projection method for the Navier-Stokes solver, and a higher order interface advection scheme. The curvature to the interface is calculated from an optimal fit for a quadratic approximation to the interface over groups of cells.
π SIMILAR VOLUMES
A numerical model for the simulation of three-dimensional liquid-gas flows with free surfaces and surface tension is presented. The incompressible Navier-Stokes equations are assumed to hold in the liquid domain, while the gas pressure is assumed to be constant in each connected component of the gas
## Abstract We present an implementation of Hysing's (__Int. J. Numer. Meth. Fluids__ 2006; **51**:659β672) semiβimplicit method for treating surface tension, for finite volume models of interfacial flows. Using this method, the surface tension timestep restriction, which is often very stringent, c
We examine the coupling of the patterned-interface-reconstruction (PIR) algorithm with the extended finite element method (X-FEM) for general multi-material problems over structured and unstructured meshes. The coupled method offers the advantages of allowing for local, element-based reconstructions
Re SC Shorter Communications exposure time of surface element Greek symbols main stream fluid velocity S boundary layer thickness component of velocity for x, y, z coordinates req similarity variable detlned by E.q. (7) spectively p viscosity detined by Eq. (5) 8 similarity variable de&d by E.q. (14