Flame Aid

The first-aid kit for flame calculations: Cantera, built natively for iOS. Flame Aid runs four practical combustion calculators on iPhone and iPad. Calculations run locally on your device; no server, account, or internet connection is required. Flame Temperature Estimate adiabatic, constant-pressure equilibrium temperature from initial temperature, pressure, and your fuel-air mixture. Ignition Delay Calculate the time to a 500 K temperature rise in a constant-pressure reactor, with a 10-second simulation window. Flame Speed Solve a one-dimensional, freely propagating laminar premixed flame. Calculation time depends on the fuel, conditions, and device; some conditions may not converge. Fuel Blends Build a custom gas mixture from selected GRI-Mech 3.0 species using molar parts. Calculate lower and higher heating values, density, viscosity, and other properties, then estimate the blend’s adiabatic flame temperature. USE THE FLOWS YOU MEASURE Enter fuel and air mass flow, actual volume flow, or equivalence ratio. Switch common engineering units while preserving the physical values. Actual gas volume flow uses the entered temperature and pressure. KEEP A CALCULATION LOG Successful calculations are saved automatically in a local log of up to 1,000 rows. Reorder, remove, or clear records and copy full-precision results as CSV for analysis elsewhere. BUILT FROM TEST-CELL EXPERIENCE I am a combustion CFD engineer and have used Cantera for about a decade. During testing, I kept needing quick fuel-air and flame-temperature calculations. With help from Codex, I brought Cantera to iOS to make those calculations available on the device in my pocket. REFERENCES Cantera 3.2.0: Goodwin et al. (2025), doi:10.5281/zenodo.17620923. GRI-Mech 3.0: Smith et al. (1999), University of California, Berkeley, https://combustion.berkeley.edu/gri-mech/version30/text30.html. HyChem: Wang et al. (2018), Combustion and Flame 193, 502–519 and 520–537; https://web.stanford.edu/group/haiwanglab/HyChem/. NH₃ cracking basis: Shohdy, Alicherif & Lacoste (2023), Energies 16, 1323, doi:10.3390/en16031323. The 20% cracking example uses NH₃/H₂/N₂ = 11.92/4.47/1.49. Jet-A/UCSD NOx validation: Kim et al. (2026), ASME Journal of Engineering for Gas Turbines and Power 148(11), 111017. https://asmedigitalcollection.asme.org/gasturbinespower/article/148/11/111017/1234757 Use Flame Aid with care. Its calculations are estimates and do not guarantee the accuracy or completeness of combustion analyses. Confirm important results against suitable experimental data or validated methods.