Ducted Assembly Steady State Heat Transfer Software (DASSH)

The Ducted Assembly Steady State Heat Transfer Software (DASSH) is an open-source tool for calculating temperature and flow distributions in hexagonal, ducted assemblies comprised of wire-wrapped pin bundles. DASSH is intended for use during the design process to provide a rapid assessment of the flow and temperature distribution, especially when assembly designs are in their early stages and not fully developed.

Installation

DASSH requires Python 3.6+. Detailed installation instructions can be found in the user guide.

Citing DASSH

If you use DASSH in your research, please consider citing the following conference paper, the theory manual, or the user guide.

• Milos Atz, Micheal A. Smith, Florent Heidet. “DASSH software for ducted assembly thermal hydraulics calculations – overview and benchmark”. Transactions of the American Nuclear Society 123 pp. 1673-1676 (2020). URL.
• Milos Atz, Micheal A. Smith, Florent Heidet, "Ducted Assembly Steady State Heat Transfer Software (DASSH) - Theory Manual", ANL/NSE-21/33, Argonne National Laboratory, 2021.
• Milos Atz, Micheal A. Smith, Florent Heidet, "Ducted Assembly Steady State Heat Transfer Software (DASSH) - User Guide", ANL/NSE-21/34, Argonne National Laboratory, 2021.

Troubleshooting and reporting bugs

If you encounter issues installing or running DASSH or would like to report a bug, please reach out to the developer via matz [at] anl [dot] gov

Documentation

• User guide: https://github.com/dassh-dev/documents/blob/master/user_guide.pdf
• Theory manual: https://github.com/dassh-dev/documents/blob/master/theory_manual.pdf

License

DASSH is distributed under the BSD-3 license.