OCTOPUS

A repository for m5 injector design engineers to collate code performing analysis on injector flow and efficacy.

Install with pip:

pip install git+https://github.com/cuspaceflight/octopus.git

Documentation:

Octopus Docs

Current features:

• Model flow through a simple straight orifice with a selection of 1- and 2-phase models.
• Models supported:
• Single Phase Incompressible: python Orifice.m_dot_SPI(Pcc)
• Homogeneous Equilibrium Model: Orifice.m_dot_HEM(Pcc)
• Dyer Correction Model: Orifice.m_dot_dyer(Pcc)
• Accurate Equations of State for multiple fluids, coefficients included for N2O.
• Example code showing some features of the octopus module, most documentation is in docstrings on source code.

Currently in progress:

• Improving class heirarchy
• Adding venturi calculations
• Making nitrous data easier to access
• Improving documentation

Eventual planned features:

• Orifice types - Waxman cavitating
• Estimation of orifice discharge coefficients (from empirical data) (?)
• Estimation of atomisation performance (from empirical data) (?)
• Determine element O/F, overall O/F
• Determine film cooling mass flow proportion (~20% is said to be sufficient to ignore the core O/F for temperature calculations, need to find the source for this - possibly NASA SP-8089)
• Warnings for combustion stability criteria (from empirical data)