ÈSS is a simulation environment able to handle thermal, structural, and fluid dynamics problems. It has its own geometry interface, built on the basis of the OpenCascade kernel: a CAD file can be loaded, standard and advanced manipulation tasks performed. Operations for model defeaturing, often needed when performing the simulation work, are made also available. Only .brep and .step files can be loaded into the interface: this is absolutely not limiting, since each proprietary solid modeler is able to generate .step files.

She’s Glida, or Tauser, who has inspired the code author along his work, giving fundamental contributions and ideas
This is how the interface looks like. A multi-body geometry has been loaded and coarse mesh, with default controls, generated

A powerful and easy-to-use meshing interface is available: fully tetrahedral or fully hexahedral grids can be generated; element sizing controls can be put on each primary geometry entities and onto sub-entities. The mesh engine is able to generate conformal mesh in case of solids assembled into a single component. The user can rely on two different meshing strategies, able to handle highly corrupted CAD models, without healing, and always bringing to valid computational meshes.

Mechanical structural, thermal, fluid simulations can be handled and coupled in a single graphic environment, by piling up them on a main tree; the post-processing and data analysis section has slicing, mapping, exporting tools, common to all the physics environments.

Tauser ÈSS can be interfaced to all the solvers, commercial, if a suitable license is available, or open-source, an run them. The default solver in ÈSS, is Calculix, able to handle a wide spectrum of physical models with an efficiency with performances at the status of the art. Software modules for interfacing different solvers with ÈSS workbench are available on demand.