There is a newer version of this record available.

Software Open Access

Combustion Toolbox: A MATLAB-GUI based open-source tool for solving gaseous combustion problems

Cuadra, A; Huete, C; Vera, M

Website

 

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
  • The code is in it’s transition to 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 -
  • All the routines and computations are encapsulated in a more comprehensive and user-friendly GUI
  • The code is in it’s transition to Python
  • Export results in a spreadsheet
  • Export results as a .mat format
  • Display predefined plots (e.g., molar fraction vs equilence ratio)

This project is also part of the PhD of Alberto Cuadra-Lara.

If you use this software, please cite it using these metadata.
Files (79.6 MB)
Name Size
AlbertoCuadra/combustion_toolbox-v0.9.1.zip
md5:90b1d036e423053276dd13b2da0915b5
79.6 MB Download
1,749
144
views
downloads
All versions This version
Views 1,749135
Downloads 1447
Data volume 8.1 GB557.4 MB
Unique views 1,195112
Unique downloads 1017

Share

Cite as