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Adiabatic Flames

Project Description & Objectives

  • Writing script to model combustion equilibrium of hydrogen-air flame and reporting major/minor species equilibriums along with associated adiabatic flame temperatures

    • Flame temperature & equilibrium concentrations as a function of equivalence ratio​

    • Effect of increase in pressure

    • Effect of calorically perfect gas assumption

    • Effect of adding neon diluent

    • Comparison of NOx emission concentration based on all above changes

  • Comparison and validation of written script to available commercial programs (GasEq & NASA CEA)

Accomplishments & Work Completed

  • Equilibrium calculation script required use of multiple iteration methods (bisection method and solve/linsolve)

    • Developed code included unique numerical integration method to account for changing specific heats of gasses over temperature range​

  • Written script closely matches commercial code calculations for adiabatic flame temperature

  • Major species concentration calculations all fell within 5% of commercial code outputs

  • Minor species concentrations all within same order of magnitude

  • See below for full report of code characteristics and algorithms

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