| polyhedra) automatically represents the interface between different material regions (whether fluid-solid or solid-solid) using a conformal interface, which means that solution domains are coupled implicitly without mapping or interpolation. The coupling is performed in the memory of the computer, and not using files passed via the hard-drive, so that the degree of interaction is much higher than through external coupling; information is interchanged at an inner iteration level, rather than at each external iteration (which typically takes place once per time step), resulting in increased efficiency and robustness. This methodology is very attractive for applications that require: conjugate heat-transfer and stress analysis; fluid structure interaction; and melting and solidification (where the continuum changes state from solid to liquid or vice versa). Multiphase and Multiphasics STAR-CD has always provided a comprehensive range of physics modeling, capable of simulating engineering problems that involve turbulence, combustion, heat transfer (including radiation heat transfer), reacting flows and multiphase physics. STAR-CD V4 introduces state-of-the-art free surface modeling, an improvement on the technology previously used extensively throughout the marine industry in COMET, and the ability to model phase change through cavitation, boiling or condensation. From CAD to CFD solution Using either the STAR-CAD Series or a dedicated geometry import facility, STAR-CD can import geometries and models from almost any CAE tool, and automatically generate a computational mesh at the click of a button. For problems that involve large assemblies of complex geometry parts, CD-adapco's unique surface-wrapping tool significantly reduces the number of man-hours spent on surface cleanup, often reducing the entire meshing process to hours instead of days. | The surface wrapper works by 'shrink-wrapping' a high quality triangulated surface mesh onto any geometrical model, closing holes in the geometry and joining disconnected and overlapping surfaces, providing manifold surfaces that can be used to automatically generate a computational mesh without user intervention |