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Currently, we offer the following program package:
- MoveGrid - tool which allows you to move or to deform three-dimensional, unstructured, mixed-element grids. It is intended for flow simulations with moving boundaries (moving flaps and rudders, flutter, etc.), or where grid boundaries are reshaped by an optimizer. The package consists of a standalone program and a library with the same functionality. Thus, you can either use the program to move / deform the grid according to given boundary conditions, or you can do the same by calling the library from your own software. The algorithm employs linear elasticity equations of solid mechanics to move the grid nodes, which guarantees valid grid even in cases of large deformations and sheering. Thanks to a novel numerical formulation, the tool can handle grids consisting of a mix of tetrahedra, prisms, pyramids and hexahedra directly and efficiently.
For technical details, examples of use and the licensing, please follow the above links to the product pages.
- Gridder - program for the generation of two-dimensional as well as fully three-dimensional unstructured, mixed-element grids. Viscous layers can be resolved using embedded quadrilateral (in 2D) or prismatic / hexahedral (in 3D) grid elements. Surface grids can consist either of triangular or quadrilateral elements, or of a mixture of both types. Thus, a wide range of grid generation needs can be satisfied. Interface to CAD software is furnished by the capability to import models in IGES format. However, Gridder also features a reasonable set of its own CAD capabilities, so that it is possible to construct, edit, or to repair objects and boundaries of the simulation domain (guaranteed "watertight"). Of course, all steps of the grid generation process are controlled by an intuitive graphical user interface. All lines, arcs, curves and surfaces are defined internally as NURBS (NonUniform Rational B-Spline) objects, in order to achieve a mathematically clean and versatile representation. We concentrate in particular on complex grids for viscous flows, which require accurate representation of curved parts, strongly varying grid densities, as well as highly-stretched grid elements, while maintaining high quality of the grid elements.
- Mixas - standalone program and a library for flow simulation on two-dimensional as well as fully three-dimensional unstructured, mixed-element grids. It is intended for simulations on stationary or moving grids, with flow speeds ranging from very low subsonic to hypersonic. The equations being solved are Euler and Navier-Stokes, in a finite-volume, density-based formulation (with preconditioning for low Mach-number flows). The unstructured grids may be a mix of various element types, as required to resolve geometrical and/or flow features. In the development of Mixas, we concentrate on solution accuracy, computational efficiency (in particular on on multi-core processors), and on the robustness of the solution process. Our main intention is the simulation of dynamic processes for geometrically complex objects. Since the core flow solver will be provided also as a library, it will become possible to invoke Mixas from external multi-physics or optimization software. Provisions will be made to exchange data (both ways) between any such software and Mixas.
- Vis23D - programs to draw xy-plots and to visualize data on two- and three-dimensional structured or unstructured (mixed-element) grids. An outstanding feature is the capability to manage and to display different data for several physical domains at the same time (e.g.: structural stresses, plus temperature inside the combustion chamber, plus pressure outside the vehicle). Another feature is the possibility to specify surface variables (like skin friction) in addition to volume variables. It is further possible to probe data at points, along lines and along surface cuts (e.g., at given cross sections along the wing span). The package will consist of two programs, one for xy- and two-dimensional plots (Vis2D), the other one for visualization in three dimensions (Vis3D). Both programs are updated versions of our earlier products and come with a new graphical user interface.
If you are interested in one of the above software packages, please do not hesitate to contact us.