Abstract In order to evaluate the influence of preform preparation processes on thermal cycle stability glass-to-metal seals, this work embraced two different methods produce for seals. For conventional powder metallurgy (PM) method, molten glass was quenched form frits, then frits were ball milled prepare powders. These powders pressed into green bodies and heated preforms. While casting-machi...

Abstract Solving conjugate heat transfer design problems is relevant for various engineering applications requiring efficient thermal management. Heat exchange between fluid and solid can be enhanced by optimizing the system layout shape of flow channels. As transferred at fluid/solid interfaces, it crucial to accurately resolve geometry physics responses across these interfaces. To address thi...

We present a parametric finite element approximation of two-phase flow. This free boundary problem is given by the Stokes equations in the two phases, which are coupled via jump conditions across the interface. Using a novel variational formulation for the interface evolution gives rise to a natural discretization of the mean curvature of the interface. In addition, the mesh quality of the para...

We consider a stationary Stokes interface problem. In the discretization the interface is not aligned with the triangulation. For the discretization we use the P1 extended finite element space (P1-XFEM) for the pressure and the standard conforming P2 finite element space for the velocity. Since this pair is not necessarily LBB stable, a consistent stabilization term, known from the literature, ...