NASA OVERFLOW Overset Grid CFD Flow Solver

OVERFLOW is a Computational Fluid Dynamics (CFD) flow solver under development by NASA. It uses structured overset grids to simulate fluid flow, and is being used on projects for Aeronautics Research, Science, Space Technology, and Human Exploration Mission Directorates. The code is available to U.S. companies and individuals under an appropriate Software Usage Agreement.


Latest Release: Version 2.2o, 7 March 2019

Request OVERFLOW:

OVERFLOW is available only to U.S. companies and individuals. The code may be requested by writing an email to Pieter Buning. You must include your full mailing address and a brief description of your application area.

OVERFLOW User’s Manual (Download)

Join the OVERFLOW email list (list Archives)

2010 OVERFLOW Training Class Viewgraphs (Introduction|Morning|Afternoon)

2014 OVERFLOW Training Class Viewgraphs (replaces 2010 Afternoon)

Selected Reference Papers

Companion NASA Overset Grid CFD Software:

New users may also wish to obtain Chimera Grid Tools (CGT) and Pegasus 5, both from NASA Ames Research Center. These packages are needed to run many of the test cases that come with OVERFLOW. CGT is a collection of software tools for grid generation, pre- and post-processing, and visualization, tailored for overset grid systems. Pegasus 5 is a program used to assemble overset grids.

Presentations from the 2018 Overset Grid Symposium – October 1-4, 2018, University of Maryland, College Park, Maryland

Past Overset Grid Symposia (some with presentations available)

Recent Publications: