Modeling and simulation tool for continuous and hybrid systems.
UPDATE: ----------- This repository is no longer maintained, the new version of the QSS Solver is available at: https://github.com/CIFASIS/qss-solver
SWASH is a general-purpose numerical tool for simulating unsteady, non-hydrostatic, free-surface, rotational flow and transport phenomena in coastal waters as driven by waves, tides, buoyancy and wind forces. It provides a general basis for describing wave transformations from deep water to a beach, port or harbour, complex changes to rapidly varied flows, and density driven flows in coastal seas, estuaries, lakes and rivers.
A multidomain building performance simulation program.
Sempy is a Python package for the solution of partial differential equations using the spectral element method.
open source Aerodynamics and 3-D CFD software (RANS, VLES, DNS) for compressible turbulent flows: 1.0.2 version with GUI (mar 2012)
Stress intensity factor (SIF) calculation from crack tip displacements
The code implements Muskhelishvili's complex function approach to calculate 2D stress intensity factors (modes I+II) from crack tip displacement fields. Surface displacements can be used with a plane stress elastic model. The code uses power/Fourier series expansion and a conformal mapping of an ellipse onto a circle.
A library containing Some Useful Fortran Routines
libSUFR contains Some Useful Fortran Routines that I wrote for my own use, but that may also be useful for others. At the moment, it also "SUFRs" from the fact that Fortran module files are compiler-dependent...
console to calculate airflow around an airfoil based on RANS approach
RANSFOIL is a console program to calculate airflow field around an isolated airfoil in low-speed, subsonic, transonic or supersonic regime by numerically solving the Reynolds averaged Navier-Stokes (RANS) equations using mature computational fluid dynamics (CFD) method. As postprocess results, the aerodynamic parameters of the airfoil, e.g., lift coefficient and drag coefficient, can be integrated from the airflow distribution near wall boundary. In addition, the coupling between airflow and heat transfer and the effect of surface roughness on near wall flow are considered by this program, it can be used for engineering calculation of the friction drag and heat transfer coefficients on airfoil surface. RANSFOIL reads airfoil coordinates from a 1D XYZ file as only input, then outputs grid and solution files in 2D PLOT3D format to record grid coordinates and airflow data and a report file to show aerodynamic parameters.
A library to aid the transition from PGplot to PLplot in Fortran
PG2PLplot is a library that facilitates the transition from PGplot to PLplot with Fortran programs
Runge is an Interactive Solver for Systems of Differential Equations
Runge is an Interactive Solver for Systems of Ordinary Differential Equations. It solves initial value problem (aka Cauchy problem). Few advantages Runge provides: It's fast. It utilizes BLAS and LAPACK libraries optimized for modern multi-core processors. It's interactive. It allows you to start a solution by mouse click on a plane. It's precise. It uses Runge Rule to adjust step length to satisfy required precision on each step. It's effective. When it needs to compute derivatives (Jacobian matrix, for example) it does that analytically, i.e. without using numerical methods. It's portable. It works on Windows and Linux 32 and 64 bit and Mac OS X 64 bit. It's open. It allows you to implement and embed your own algorithms (aka "solvers"). It's easy to use. It allows to export results to MS Excel and MATLAB. It's multilingual. It currently supports Englis and Russian languages. It's free. It's distributed under the Boost Software License.
Structural Analysis Program for Civil Engineering.Can evaluate structures for static or dynamic seismic analysis. Dynamic analysis is made by accelerograms. Any analysis can be linear or non linear.
2D Frame Analysis, Linear Static Analysis, Mode Shapes
This is a free program for solving linear 2D framed structures under static loading and calculating the mode shapes. It is coupled with an easy-to-use GUI that provides the possibility to design the structure very fast. It calculates reaction forces, diagrams of axial and shear forces, as well as, diagrams of bending moments. Moreover, it calculates the mode shapes of the structure using various methods and it will be cabable of performing dynamic analysis soon. The program is written in FORTRAN90 and the GUI in Python. At the moment it is available only in 64bit version for windows.
Open source development for FluidEarth (https://fluidearth.net/default.aspx) which supports the OpenMI Standard (http://openmi.sourceforge.net) Here are OpenMI Association approved applications.
A collection of Fortran interfaces to the most common Open Source GIS libraries, plus some more Fortran-specific tools.
Nonlinear Krylov acceleration of fixed-point and Newton-like methods
Nonlinear Krylov Acceleration (NKA) is a method for accelerating the convergence of fixed-point (Picard) iterations. Many Newton-like and inexact Newton methods are fixed point iterations. The NKA project provides the canonical implementation of the method for several programming languages. The black-box accelerator is simple to integrate into existing code. Placed in the iteration loop, it observes the sequence of solution updates and replaces them with improved updates using information it has gleaned from previous solution iterates. It was only recently recognized (2011) that NLK is essentially equivalent to Anderson Acceleration for a specific choice of mixing parameter. NLK was independently devised in the late 1980's using a very different approach, and though it leads to the same algebraic method, NLK's organization is somewhat different, and arguably superior. The NLK approach also provides clear rationale for the proper choice of Anderson's arbitrary mixing parameter.
FE simulation based automatic global optimisation in modern Fortran
A collection of Fortran 2003, 90 and 77 routines, modules and programs for automatic simulation based global constrained optimisation. The initial application is for FE simulation of elasto-plastic buckling of steel rods aimed at tuning the hardening model. Unix shell scripts are used extensively. High concurrency is achieved with parallel multi-start global search and with parallel MPI FE. Powell's BOBYQA or LINCOA are used (not included in this package). Automatic mesh generation of 3D cylinders is provided + automatic boundary conditions, all via Fortran and shell scripting.
CFD code using Arbitrary Lagrangian Eulerian algorithm.
Quantum transport code based on Gaussian03/09
Atomistic NanoTransport (ANT) comprises a series of codes designed to compute electronic quantum transport with a broad range of applicability in nanoelectronics. ANT.Gaussian (or ANT.G for brevity) relies on the popular quantum chemistry code GAUSSIAN03/09 code with which interfaces in a seamless manner. Straightforwad use of ANT.G include the computation of the zero-bias conductance (or, alternatively, the electrical current under an applied bias voltage) of a variety of nanoscale systems such as molecular bridges or simply metallic atomic contacts as those created with scanning tunneling microscope or break junction techniques. The use of ANT.G may also be naturally extended to the computation of scanning tunneling spectroscopy and the simulation of scanning tunneling and electrostatic force microscopy.
COMIS (Conjunction of Multizone Infiltration Specialists) is a multizone airflow simulation program.
RPM files of CalculiX, a free FEM package. See www.dhondt.de for the non-rpm base packages (cgx, ccx)
Software bundle to provide development of the following softwares for simulating waves, currents, transport and mixing as well as sediment transport in coastal environments and hydraulic systems: LWBouss1D/2D BoussSand1D/2D OCTEAD FunSedi1D/2D
Development of constitutive models for the description of soil behaviour under static and cyclic loading.
design short columns according to Egyptian code for practice 2007
Simulation of semiconductor laser optical injection and feedback
External-Cavity Semiconductor Laser Diode simulation is a Fortran implementation of Lang-Kobayashi model of semiconductor lasers subject to optical injection and optical feedback.
A modified version of EnergyPlus v. 7 or 8.
EPx is a "modified version of EnergyPlus v. 7 or 8", a fork of the open-source building energy simulation engine developed by the US Department of Energy. This project also contains the canonical open-source releases of the unmodified EnergyPlus source code.