Showing 32 open source projects for "open-source tax solver"

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  • 1

    Fosite - advection problem solver

    numerical simulation code for solving transport equations in 1D/2D/3D

    Fosite is a generic framework for the numerical solution of hyperbolic conservation laws in generalized orthogonal coordinates. Its main purpose is the simulation of compressible flows in accretion disks. The underlying numerical solution method belongs to the family of unsplit conservative finite volume TVD schemes. The method is 2nd order accurate in space and uses high order Runge-Kutta and multistep schemes for time evolution. In addition to the pure advection code several source terms...
    Downloads: 2 This Week
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  • 2
    QUCAS-Quantum-Cosmology-Integration

    QUCAS-Quantum-Cosmology-Integration

    NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20

    NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20 pipelines of the QCAUS/PDPBioGen suites are undergoing consolidation for high-scale institutional research. Core 'Ford 2026' algorithms remain the proprietary IP of the Ford Peace and Justice Foundation. Academic users at partner institutions are currently performing validation; all other commercial inquiries must contact the author License: Dual 🔬 Overview A complete computational framework for cosmological...
    Downloads: 7 This Week
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  • 3
    ransfoil

    ransfoil

    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...
    Downloads: 2 This Week
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  • 4
    GSvit

    GSvit

    Fast FDTD solver with graphics card support

    Fast FDTD solver with graphics card support. Optimized for nanoscale optics - scanning near field optical microscopy, rough surface scattering and solar cells. Uses CUDA environment for graphics card operation.
    Downloads: 14 This Week
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  • 5
    Ion Beam Simulator
    Library for ion optics, plasma extraction and space charge dominated ion beam transport.
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    Downloads: 20 This Week
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  • 6
    NESSIE is a modern first-principle calculation software that can adequately address the need for ever-higher levels of numerical accuracy and high-performance in large-scale electronic structure simulations, as well as pioneer the fundamental study of quantum many-body effects in a large number of emerging nanomaterials. NESSIE is an electronic structure code that uses a real-space FEM discretization and domain-decomposition (DD) to perform all-electron ground-state DFT and real-time...
    Downloads: 0 This Week
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  • 7
    APBS

    APBS

    Biomolecular electrostatics software

    This software has moved to http://www.poissonboltzmann.org/.
    Downloads: 0 This Week
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  • 8

    F3DM

    Finite Element Method on 3D Meshes

    f3dmlib is a FEM library that can read, write and analyse 3D tetrahedral meshes, minimize a given functional, and refine the resulting meshes. The minimization is parallelized with OpenMP. Three main features in unstable 1.8.x version (available via GIT): quadratic elements, periodic boundary conditions, and the solver for scalar and electromagnetic wave equations. f3dmgeom is a collection of a few simple tools for creating surface meshes for tetgen. It can handle simple geometries only.
    Downloads: 0 This Week
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  • 9

    Political economy library

    Political economy simulation toolkit

    Political economy library is a set of classes and accompanied tools for simulation of economy based on employment by companies, production of goods and consumption - EPC model. Actually it includes market-based model for research of the effects of Tobin tax. The library is based on Zarja library.
    Downloads: 0 This Week
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  • 10
    Coffee-Physics

    Coffee-Physics

    A simple, lightweight physics engine written in CoffeeScript

    Coffee-Physics is a minimalist physics engine written in CoffeeScript that favors approachable, creative-coding workflows over heavyweight simulation frameworks. It models motion with a particle system and uses simple constraints and behaviors—such as gravity, attraction/repulsion, drag, and springs—to create believable movement with very little code. The design is intentionally composable: you attach behaviors to particles or groups and let the update loop integrate positions, producing...
    Downloads: 0 This Week
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  • 11

    RAtom

    solves nonlinear Kohn-Sham equation for the neutral atom.

    RAtom solves nonlinear Kohn-Sham equation for the neutral atom. The adaptive algorithm based on finite element method (FEM) is implemented. Discretization of the differential eigenvalue problem is done by finite element method with Lobatto polynomials as a basis functions. High order Gauss quadratures are applied in order to obtain the total energy of atom with absolut accuracy of 1E-6 hartree. Disctretization leads to generalized eigenvalue problem, which is solved by procedures from...
    Downloads: 0 This Week
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  • 12

    GMES

    GMES is a free Python package for FDTD electromagnetic simulations.

    ...Its features include simulation in 1D, 2D, and 3D Cartesian coordinates, distributed memory parallelism on any system supporting the MPI standard, portable to any Unix-like system, variuos dispersive ε(ω) models, CPML absorbing boundaries and/or Bloch-periodic boundary conditions, and arbitrary material and source distributions. GMES officially stands for GIST Maxwell’s Equations Solver.
    Downloads: 3 This Week
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  • 13

    YAFEMS

    Yet Another Finite Element Method Solver

    YAFEMS (Yet Another Finite Element Method Solver) is a FEM solver for Linux and WIndows that reads a MED mesh file produced by Salome (http://www.salome-platform.org/) with certain groups created into the mesh, and with the help of an input text file (.yaf), performs a 3D or 2D plane stress or plane strain analysis and creates results in plain text format and in MED format. This way a complete analysis can be carried inside Salome, where a mesh file can be created, exported and read by...
    Downloads: 0 This Week
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  • 14
    Computational Fluid Dynamics (CFD) solver aimed to solve multi-physics problems on unstructured grids (inviscid Euler, Navier-Stokes flows, Heat transfer). F90 based. MPI, cgns, Metis libraries used.
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    Downloads: 0 This Week
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  • 15
    Discrete Dipole Aproximation Project

    Discrete Dipole Aproximation Project

    Plugin orientated Discrete Dipole Approximation (DDA) Solver

    Discrete Dipole Approximation Project, is a software package designed to solve the Discrete Dipole Problem by the Discrete Dipole Approximation (DDA) method. This software is desgined to be plugin operated allowing for easy implimincation of new solver methods to improve the efficienty of the code. The plugin support also allow the program to write its output in multiple formats and structures defined by plugins.
    Downloads: 0 This Week
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  • 16
    The parallelized FDTD Schrodinger Solver implements a parallel algorithm for solving the time-independent 3d Schrodinger equation using the finite difference time domain (FDTD) method. See the Hosted Apps > MediaWiki menu item for more information.
    Downloads: 0 This Week
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  • 17

    Runge

    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.
    Downloads: 0 This Week
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  • 18

    FYS7 Project - GFIEM

    Green's Function Integral Equation Method solver in 2D

    GFIEM solver in 2D developed as a FYS7 project at AAU.
    Downloads: 0 This Week
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  • 19
    cloudFlu
    HPC cloud computing for OpenFOAM (R) users
    Downloads: 0 This Week
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  • 20
    A solver for Lancester-Darmy equation. Not working yet.
    Downloads: 0 This Week
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  • 21
    A reactor solver which uses stochastic particle methods to model particle population balances. This code is developed by the CoMo group in the chemical engineering department at the university of Cambridge (como.cheng.cam.ac.uk).
    Downloads: 0 This Week
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  • 22
    A 2-D inviscid flow and adjoint solver on unstructured triangular grids. It makes use of a vertex-centroid finite volume scheme which is second order accurate. The adjoint solver is developed using the automatic differentiation tool called TAPENADE. Code has been moved to https://github.com/cpraveen/euler2d
    Downloads: 0 This Week
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  • 23
    C++ library for calculating the light propagation through large and very small structures (sub wavelength). The used method is the Fourier Modal Method. It can be solve one and two dimensional dielectric structures such as gratings, waveguides etc.
    Downloads: 0 This Week
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  • 24
    MRCWA - Multilayer Rigorous Coupled Wave Analysis is a fast, flexible optical grating solver. It calculates an exact solution to the Maxwell equations for the diffraction of light from an optical grating with arbitrary profile and materials.
    Downloads: 2 This Week
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  • 25
    CFD (computational fluid dynamics) software. Numerical 2d-solver for compressible ideal gases. Sophisticated turbulence and numerical approach which captures laminar-turbulent transition and aero-acoustic features.
    Downloads: 0 This Week
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