Cantera/cantera

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• Names for cantera library in LibCantera.jl don't match built library names, preventing Julia cantera interface from loading

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  Difficulty 2/5 1-3 hours Newbie friendliness 78/100

  Cantera/cantera#2192 · Opened Nov 5, 2026

• Reactor cloning loses stoichiometric precision, eliminating small net species source terms

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  Difficulty 3/5 1-2 days Newbie friendliness 62/100

  Cantera/cantera#2188 · Opened Oct 8, 2026

• Intermittent CI errors with Intel OneAPI 2026.1

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  CI

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  Cantera/cantera#2151 · 4 comments · Opened Jul 7, 2026

• CoverageDependentSurfPhase does not satisfy Gibbs-Duhem relation

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  Thermo

  Difficulty 5/5 Over a week Newbie friendliness 30/100

  Cantera/cantera#2133 · Opened Jun 10, 2026

• DebyeHuckel "B-dot with variable a_k" does not satisfy Gibbs-Duhem relation

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  Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  Cantera/cantera#2132 · Opened Jun 10, 2026

• Metal/electron-cloud: thermo consistency errors caused by placeholder density

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  Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  Cantera/cantera#2131 · Opened Jun 9, 2026

• The electron temperature is not correctly saved in a SolutionArray.

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  Serialization

  Difficulty 3/5 1-2 days Newbie friendliness 55/100

  Cantera/cantera#2119 · 1 comment · 2 reactions · Opened May 25, 2026

• ct.Reaction(reactants=..., products=...) treats species appearing on both sides as a third-body collider

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  Input

  Difficulty 3/5 1-2 days Newbie friendliness 64/100

  Cantera/cantera#2115 · 3 comments · Opened May 11, 2026

• Intermittent CI test failures in Matlab toolbox

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  CI Matlab

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  Cantera/cantera#2045 · 2 comments · Opened Nov 14, 2025

• Older MATLAB fails for newer Linux glibc

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  Linux Matlab

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#2035 · 6 comments · Opened Nov 5, 2025

• MATLAB toolbox does not display stdout

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  Matlab regression

  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  Cantera/cantera#2005 · 10 comments · Opened Oct 12, 2025

• Incorrect flame sensitivities caused by reactions with large reverse rate constants

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  1D Flames

  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  Cantera/cantera#1942 · 1 comment · Opened Aug 15, 2025

• VCS equilibrium solver jumps between different solutions for mixtures with binary-solution-tabulated phase

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  Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  Cantera/cantera#1928 · 3 comments · Opened Jul 16, 2025

• Inconsistent Size of `net_production_rates` in `ReactorSurface()` Object

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  Kinetics question

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#1874 · 11 comments · Opened Apr 16, 2025

• `auto` argument to 1D `solve()` method slows down the solve

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  1D Flames discussion

  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  Cantera/cantera#1873 · 6 comments · Opened Apr 15, 2025

• Build fails with LTO due to type mismatch/ODR violations

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  compiling

  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  Cantera/cantera#1783 · 7 comments · Opened Aug 20, 2024

• Incorrect densities for a Peng-Robinson fluid when it should be in the liquid phase

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  Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  Cantera/cantera#1721 · 3 comments · Opened Jun 21, 2024

• Enable multiphase equilibrium calculations involving surface phases

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  enhancement Equilibrium

  Difficulty 5/5 Over a week Newbie friendliness 30/100

  Cantera/cantera#1720 · Opened Jun 21, 2024

• MixtureFugacityTP::solveCubic fails for certain temperatures and pressures

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  Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#1699 · 4 comments · Opened May 26, 2024

• Add support for converting BULK phase definitions from Chemkin input files

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  enhancement Input

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#1698 · 1 reaction · Opened May 25, 2024

• Validation for PLOG rates fails for extremely high pre-exponential factors after Cantera 2.6 release

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  Kinetics

  Difficulty 4/5 3-5 days Newbie friendliness 40/100

  Cantera/cantera#1405 · 21 comments · Opened Nov 4, 2022

• Fail to converge for zeroD simulation

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  Reactors

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#1400 · 2 comments · Opened Sep 30, 2022

• Synchronization of `ReactionRate` objects: `Reaction` vs `MultiRate`

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  Kinetics

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  Cantera/cantera#1211 · 5 comments · Opened Mar 6, 2022

• Repeated solution of the reactor Network object leads to an error.

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  bug Reactors

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#1117 · 3 comments · Opened Oct 11, 2021

• Numeric solver runaway using ReactorNet.advance_to_steady_state

  May be free again @hasin4 claimed this 26 days ago, and no pull request is open. Open

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  documentation enhancement Reactors

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#989 · 6 comments · Opened Mar 7, 2021

• Pure substance convergence failure setting "UV" near saturation condition

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  bug Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  Cantera/cantera#971 · 6 comments · Opened Feb 3, 2021

• IdealGasPhase getStandardChemPotentials

  May be free again A pull request for this issue was closed without being merged. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#841 · 7 comments · Opened Apr 4, 2020

• Improve handling of duplicate reaction check for reactions that are multiples of one another

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  Input Kinetics

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#704 · Opened Sep 12, 2019

• Fix implementation of advance_to_steady_state

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  enhancement Reactors

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  Cantera/cantera#654 · 6 comments · 1 reaction · Opened Jun 16, 2019

• setMoleFractions violates model assumptions for surfPhase thermo phase

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  bug Thermo

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#633 · 11 comments · Opened Apr 30, 2019

• 1D solver can fail when flames propagate too close to inlet boundary

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  1D Flames bug

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  Cantera/cantera#384 · Opened Nov 10, 2016

• Fundamental flaws in Gibbs and VCS algorithms for constant enthalpy / energy / entropy

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  bug Equilibrium

  Difficulty 5/5 Over a week Newbie friendliness 35/100

  Cantera/cantera#334 · 1 comment · Opened Apr 18, 2016

• VCS solver finds incorrect solution by extrapolating thermo data

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  bug Equilibrium

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  Cantera/cantera#270 · 1 comment · Opened Jun 10, 2015

• [Bug]`ReactorNet.advance()` is not reproducible when an advance limit is set (root-finding arrays left uninitialized when `CVodeRootInit` is toggled per call)

  Possibly taken @kimurap claimed this 38 days ago. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  Cantera/cantera#2179 · 1 comment · Opened Sep 29, 2026

• Incorrect reference state in some of the YAML files.

  Possibly taken @hazalkoom claimed this 52 days ago. Open

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  Input

  Difficulty 2/5 1-3 hours Newbie friendliness 72/100

  Cantera/cantera#2129 · 1 comment · Opened Jun 4, 2026

• MATLAB's outofprocess mode has massive overhead

  Possibly taken A pull request linked to this issue is open or already merged. Open

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  Matlab

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  Cantera/cantera#2034 · 1 comment · Opened Nov 4, 2025

• Multicomponent transport model fails for single-species phases

  Possibly taken @GiantWizard claimed this 34 days ago. Open

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  Transport

  Difficulty 3/5 1-2 days Newbie friendliness 50/100

  Cantera/cantera#1823 · Opened Dec 2, 2024