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Combustion Toolbox

version 0.9.1 (75.8 MB) by Alberto Cuadra Lara
A MATLAB-GUI based tool for solving gaseous combustion problems

282 Downloads

Updated 30 Mar 2022

From GitHub

View license on GitHub

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 Linux

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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.