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FEST-3D (Finite-volume Explicit STructured 3-Dimensional) is computational fluid dynamic solver written in Fortran 90 for solving the Navier-Stokes equations on structured grids using state-of-the-art finite-volume methods. It is a modular, multiblock, finite-volume code developed to solve flow problems in the field of aerodynamics.


For installation instructions check out the Documentation guide.

Steps to run FEST-3D

For detailed documentation on steps to run the FEST-3D after downlaod and installation, check out "How to run FEST-3D" page.


For tutorials check out the test_case descriptions.

Modules and Subroutines

Although most of modules and subroutines are named such that its purpose is clear from its name, still more information is provided in source File and Modules pages. Documentation of FEST-3D uses Ford documentation generator which generates documentation using the special comments written for each subroutine and module.


FEST-3D is an open-source software available under GNU General Public License v3.0



User are requested to cite the following JOSS article for any research publications made using the FEST-3D solver.

Jatinder Pal Singh Sandhu, Anant Girdhar, Rakesh Ramakrishnan, R. Teja, Santanu Ghosh, FEST-3D: Finite-volume Explicit STructured 3-Dimensional solver, Journal of Open Source Software, 5(46), 1555, https://doi.org/10.21105/joss.01555.


Details about the governing equations used in the FEST-3D code can be found in the publication by Jatinder Pal Singh Sandhu et al. (Singh Sandhu, J. P., Girdhar, A., Ramakrishnan, R., Teja, R. D., & Ghosh, S., A convergence study of solutions using two two-equation RANS turbulence models on a finite volume solver for structured grids, AIAA 2018-3859).

FEST-3D Team

Group of students from the Department of Aerospace Engineering at Indian Institute of Technology Madras (IITM), Chennai (600036), India.