Open Source Fortran Computational Fluid Dynamics (CFD) Software

The DUNS (Diagonalized Upwind Navier-Stokes)code is a 2D/3D, structured, multi-block, multi-species,reacting, steady/unsteady, Navier Stokes fluid dynamics code with q-omega turbulence model. It currently uses a diagonalized ADI procedure with upwind diff

ISAAC (Integrated Solution Algorithm for Arbitrary Configurations) is a computational fluid dynamics (CFD) code developed to test and apply high order turbulence models for compressible flows around complex geometric configurations.

FFTW++ is a C++ header class for the FFTW Fast Fourier Transform library that automates memory allocation, alignment, planning, wisdom, and communication on both serial and parallel (OpenMP/MPI) architectures. In 2D and 3D, hybrid dealiasing of convolutions substantially reduces memory usage and computation time. Wrappers for C, Python, and Fortran are included.

UPDATE: As of March 2023, the CFDTOOLS project has moved its public repository to NASA's official organization on GitHub: https://www.github.com/nasa/cfdtools While this repository will remain available, it will no longer receive updates or be monitored for issues. Please see the link above for latest releases and issue status. ---- The CFD Utility Software Library (previously known as the Aerodynamics Division Software Library at NASA Ames Research Center) contains nearly 30 libraries of generalized subroutines and close to 100 applications built upon those libraries. These utilities have accumulated during four decades or so of software development in the aerospace field. David Saunders and Robert Kennelly are the primary authors, but miscellaneous contributions by others are gratefully acknowledged.

Construct2D is a grid generator designed to create 2D grids for CFD computations on airfoils. The grids are generated in Plot3D format. The only required input file is the set of coordinates defining the airfoil geometry, using the same format as XFoil, the popular vortex-panel code for airfoil analysis. Construct2D can create grids with O topology (recommended for airfoils with a blunt trailing edge) or C topology (recommended for airfoils with a sharp trailing edge). Now available in version 2.0: hyperbolic grid generation to create higher quality grids in a fraction of the time compared to elliptic grid generation. Elliptic grid generation is still available also. Smooth airfoil surface spacing is handled automatically with user-controlled clustering parameters. Also included is a visualizer written in Python with matplotlib.

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.

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 coordinates data from a 1D XYZ file which describes the grid points or control points on airfoil 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.

CFD code using Arbitrary Lagrangian Eulerian algorithm.

CFDtools is a set of libraries to manage data format for CFD (mesh/grid and flow data). It provides additional tools for development of simulations softwares.

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.

GMIT provides generic interface of mesh used in computational fluid dynamics, and is equipped with some tools for generating and manipulating mesh. Specific details of mesh will be isolated from upper level application (eg. numerical algorithm).

HYP CFD is a structured, 3-D Navier-Stokes, MPI parallel multi-block computational fluid dynamics program for fluid thermophysics research, and high speed aerospace vehicle and propulsion applications.

MagCAD is a set of tools for reconstructing 3D meshes from medical images such as MRI scans and ultra-sound. Resulting meshes are designed for CFD and visualisation

Nuwtun is a Computational Fluid Dynamics code for solving the Euler and Navier-Stokes equations. Code is now hosted at https://bitbucket.org/cpraveen/nuwtun

Sound Propagation and Acoustic Radiation of Turbomachines - Aeroacoustic Noise Suppression Project : A CFD-like CAA code for predicting turbomachines noise.

open source Aerodynamics and 3-D CFD software (RANS, VLES, DNS) for compressible turbulent flows: 1.0.2 version with GUI (mar 2012)

CAFFA (abbreviation for Computer Aideed Fluid-Flow Analysis) is a well-known CFD code that followed Ferziger&Peric book on Computational Fluid Dynamics. Menter's k-omega SST (short for Shear Stress Transport) model is probably the dearest turbulence model in aerodynamics community. It is a blend of k-omega and k-epsilon model. It's popularity is not diminishing since it's being used in new RANS/LES hybrid models like DES (Detached Eddy Simulation) too. My wish was to made available to wider community a simple implementation of this model. First I will upload only 2D code, and in the future I plan to upgrade CAFFA to unstructured 3D version.