Combustion Toolbox
version 0.9.1 (75.8 MB) by
Alberto Cuadra Lara
A MATLAB-GUI based tool for solving gaseous combustion problems
Combustion Toolbox is a a MATLAB-GUI based tool for solving gaseous combustion problems.
Features
- The code stems from the minimization of the free energy of the system by using Lagrange multipliers combined with a Newton-Raphson method, upon condition that initial gas properties are defined by two functions of states (e.g., temperature and pressure)
- When temperature is not externally imposed, the code retrieves a routine also based on Newton-Raphson method to find the equilibrium temperature
- Solve processes that involve strong changes in the dynamic pressure, such as detonations and shock waves in the steady state
- Find the equilibrium conditions of the different phenomena undergoing behind the shock: molecular vibrational excitation up to dissociation, and electronic excitation up to ionization, thereby providing the properties of the gas in plasma state within the temperature range given by the NASA’s 9-coefficient polynomial fits.
- The corresponding thermodynamic properties of the species are modelled with NASA’s 9-coefficient polynomial fits, which ranges up to 20000 K, and the ideal gas equation of state
- Results are in excellent agreement with NASA’s Chemical Equilibrium with Applications (CEA) program, CANTERA and Caltech’s Shock and Detonation Toolbox
- All the routines and computations are encapsulated in a more comprehensive and user-friendly GUI
- There is an early stage version in Python
- Display predefined plots (e.g., molar fraction vs equilence ratio)
- Export results in a spreadsheet (requires Excel)
- Export results as a .mat format
Chemical equilibrium problems
- TP: Equilibrium composition at defined temperature and pressure
- HP: Adiabatic temperature and composition at constant pressure
- SP: Isentropic compression/expansion to a specified pressure
- TV: Equilibrium composition at defined temperature and constant volume
- EV: Adiabatic temperature and composition at constant volume
- SV: Isentropic compression/expansion to a specified volume
Shock calculations
- Pre-shock and post shock states
- Equilibrium or frozen composition
- Incident or reflected shocks
- Chapman-Jouguet detonations and overdriven detonations
- Reflected detonations
- Oblique shocks/detonations
- Shock polar for incident and reflected states
- Hugoniot curves
- Ideal jump conditions for a given adiabatic index and pre-shock Mach number
Rocket propellant performance assuming
- Infinite-Area-Chamber model (IAC)
- Finite-Area-Chamber model (FAC) - under development -
Cite As
Cuadra, A., et al. Combustion Toolbox: A MATLAB-GUI Based Open-Source Tool for Solving Combustion Problems. Zenodo, 2022, doi:10.5281/zenodo.6383180
MATLAB Release Compatibility
Created with
R2021b
Compatible with any release
Platform Compatibility
Windows macOS LinuxTags
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Databases/Functions
Examples
Export
GUI/Functions
Settings/display
Settings/extensions
Settings/functions
Settings/self/App
Settings/self/Constants
Settings/self/Elements
Settings/self/Miscellaneous
Settings/self/ProblemDescription
Settings/self/ProblemSolution
Settings/self/Species
Settings/self/TunningProperties
Solver
Solver/Functions
Solver/Functions/Thermo
Solver/Functions/root_finding
Solver/Functions/root_finding/newton
Solver/Functions/root_finding/steffenson
Solver/Rocket
Solver/chemical_equilibrium
Solver/shocks_detonations
Validations
Validations/CEA
Validations/Functions
Validations/JFM
Validations/Other stuff
Validations/Other stuff/Tests/bishnu1997
Validations/SDToolbox
Validations/TEA
Validations/Tests
Validations/Thermodynamics properties
Validations/papers
Validations/papers/cuadra2020
Validations/papers/cuadra2022
deprecated
deprecated/Test
To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.