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:

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)