Debian Science Engineering packages

NCS means "Noyau Code Saturne". This package is the Kernel of of Code_Saturne (a computational fluid dynamics free software).

FreeCAD is an Open Source CAx RAD based on OpenCasCade, Qt and Python. It features some key concepts like macro recording, workbenches, ability to run as a server and dynamically loadable application extensions and it is designed to be platform independent.

Currently, FreeCAD can import and display CAD models in IGES, STEP, and BRep formats and meshes in STL, BMS, AST and Wavefront OBJ formats. Editing and modeling features are currently somewhat limited.

Gerris is a system for the solution of the partial differential equations describing fluid flow.

A brief summary of its main (current) features:

• Solves the time-dependent incompressible variable-density Euler, Stokes or Navier-Stokes equations
• Adaptive mesh refinement: the resolution is adapted dynamically to the features of the flow
• Entirely automatic mesh generation in complex geometries
• Second-order in space and time
• Unlimited number of advected/diffused passive tracers
• Flexible specification of additional source terms
• Portable parallel support using the MPI library
• Volume of Fluid advection scheme for interfacial flows

Gmsh is an automatic 3D finite element mesh generator (primarily Delaunay) with build-in CAD and post-processing facilities. Its design goal is to provide a simple meshing tool for academic test cases with parametric input and up to date visualization capabilities.

Gmsh is built around four modules: geometry, mesh, solver and post-processing. The specification of any input to these modules is done either interactively using the graphical user interface or in ASCII text files using Gmsh's own scripting language.

See Gmsh's reference manual for a more thorough overview of Gmsh's capabilities.

HDF is a versatile data model that can represent very complex data objects and a wide variety of metadata. It is a completely portable file format with no limit on the number or size of data objects in the collection.

This package provides a HDF4/HDF5 viewer.

The libMesh library is a C++ framework for the numerical simulation of partial differential equations on serial and parallel platforms. Development began in March 2002 with the intent of providing a friendly interface to a number of high-quality software packages that are publicly available. Currently the library supports 1D, 2D, and 3D steady and transient finite element and finite volume simulations. PETSc is currently used for the solution of linear systems on both serial and parallel platforms.

This package contains the C++ header files and shared library links (only needed for developing programs with libmesh).

The libMesh library is a C++ framework for the numerical simulation of partial differential equations on serial and parallel platforms. Development began in March 2002 with the intent of providing a friendly interface to a number of high-quality software packages that are publicly available. Currently the library supports 1D, 2D, and 3D steady and transient finite element and finite volume simulations. PETSc is currently used for the solution of linear systems on both serial and parallel platforms.

This package contains the C++ header files (only needed for developing programs with libmesh).

NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format. NETGEN contains modules for mesh optimization and hierarchical mesh refinement.

PythonCAD is a scriptable (with the Python language) and easy to use drafting program.

Please note that this version still doesn't support DWG and DXF file formats.

QCAD is an application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams.

Sailcut CAD is a sail design and plotting software which allows you to design and visualise your own sails and compute the accurate development of all panels in flat sheets. You can export the sails you create to DXF, plaintext or Carlson plotter files.

Sailcut CAD's user interface is available in English, French, Dutch, German, Italian, Norwegian, Portuguese, Danish and Russian.

Tochnog is a program for finite element analysis. Multithreading and multiprocessor systems are supported. Here is a partial list of models supported:

• Differential equations (materials).
• Convection-diffusion equations,
• Stokes and Navier-Stokes,
• Elasticity (isotropy and transverse isotropy),
• Plasticity (Von-Mises, Mohr-Coulomb, Gurson, etc.; plasticity surfaces can be arbitrarily combined).

Residues in equations and error estimates for all data can be printed/plotted.

 Main Author: Dennis Roddeman <dennis.roddeman@feat.nl>
   Home Page: [http://tochnog.sourceforge.net/](http://tochnog.sourceforge.net/)

VARKON is a high level development tool for applications in the area of Engineering, Computer Aided Design and Product Modelling.

VARKON can be used as a traditional CAD-system with drafting, modelling and visualisation if you want to but the real power of VARKON is in parametric modelling and CAD applications development. VARKON includes interactive parametric modelling in 2D or 3D but also the unique MBS programming language integrated in the graphical environment.

Z88 features 20 finite element types covering plane stress, plate bending, axial symmetric structures and spacial structures up to 20-node Serendipity hexahedrons. Z88 comes with a user-friendly interface, a powerful mesh generator, a DXF-converter, two plot programs and, of course, two powerful solvers. Import of COSMOS files from Pro/ENGINEER and Pro/MECHANICA is supported.

OpenCASCADE is a suite for 3D surface and solid modeling, visualization, data exchange and rapid application development. It is an excellent platform for development of numerical simulation software including CAD/CAM/CAE, AEC and GIS, as well as PDM applications.

This package contains the command-line tools DRAWEXE, wokprocess, woksh.

Code_Aster (file/package name aster) is a mature finite element code for structural and thermal analysis. Its development has been guided by the needs of the nuclear engineering industry, and it enjoys wide use and distribution. It is also a major component of the recently-released CAELinux live DVD distribution, and links well with Salomé for high-quality pre- and post-processing.

Salomé is a powerful LGPL framework for engineering simulations. It has CAD capability within itself, can import and export CAD files in IGES format, can mesh those files, and control an external parallel solver such as Code Aster, then visualize the results. Salomé is at the heart of the new CAELinux (Computer-Aided Engineering Linux) live DVD distribution.

AVL is a program for the aerodynamic and flight-dynamic analysis of rigid aircraft of arbitrary configuration. It employs an extended vortex lattice model for the lifting surfaces, together with a slender-body model for fuselages and nacelles. General nonlinear flight states can be specified. The flight dynamic analysis combines a full linearization of the aerodynamic model about any flight state, together with specified mass properties.

BRL-CAD is a powerful Combinatorial/Constructive Solid Geometry (CSG) solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, network-distributed framebuffer support, image and signal-processing tools, and an embedded scripting language. It has been developed over a 20 year period and is now a stable mature product. This is the first GPL'ed release of the package. It is being maintained by the US Army Research laboratory (ARL).