Thermodynamic data using the CEA (9coefficients) polynomial format
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Hi Foamers!
Recently, I found that the enthalpy value of aluminum (in gas phase) calculated by the 7coefficients polynomial in chemkin format has a large error compared with JANAF database (see https://janaf.nist.gov/tables/Al005.html). On the contrary, the 9coefficients CEA polynomial function works (see, https://www.grc.nasa.gov/WWW/CEAWeb/TP2002211556.pdf) much better. Please see the attached fig, circles indicate experimental data and CEA 9co indicates the result calculated by CEA polynomial function and Chemkin 7co indicates the result calculated by 7coefficients polynomial in CHEMKINThermoFile, x axis represents the temperature and y axis represent the enthalpy of aluminum with reference temperature of 298.15K So: did anyone implement this 9coefficients CEA function in OF? or is there any way to implement this function in OF? Jiarui 
Sorry, I found I made a mistake in calculating the enthalpy, the 7coefficent chemkin polynomial works as good as CEA polynomial in the temperature range of 300 5000K

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