Generalizing the Thermodynamics State Relationships in KIVA-3V

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Description

The Peng-Robinson equation of state has been implemented into the KIVA-3V code to better handle high-pressure conditions typical of Diesel engine environments. The implementations modify pressure-volume-temperature relationships, specific heats, and departures in internal energy, among other thermodynamic partial derivatives. Computations show that significant deviations do occur for progressively heavier hydrocarbons. However, when these hydrocarbons exist in a mixture with a non-negligible portion of air, the departures from ideal behavior are mitigated. Internal energy calculations have been extended to allow for pressure effects, but the strongest factor continues to be temperature. Hence departures from ideal behavior in internal energy and related ... continued below

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52 pages

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Trujillo, M.F.; O'Rourke, P. & Torres, D. October 1, 2002.

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Description

The Peng-Robinson equation of state has been implemented into the KIVA-3V code to better handle high-pressure conditions typical of Diesel engine environments. The implementations modify pressure-volume-temperature relationships, specific heats, and departures in internal energy, among other thermodynamic partial derivatives. Computations show that significant deviations do occur for progressively heavier hydrocarbons. However, when these hydrocarbons exist in a mixture with a non-negligible portion of air, the departures from ideal behavior are mitigated. Internal energy calculations have been extended to allow for pressure effects, but the strongest factor continues to be temperature. Hence departures from ideal behavior in internal energy and related specific heats are minimum.

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52 pages

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OSTI as DE00809947

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  • Other Information: Supercedes report DE00809947; PBD: 1 Oct 2002

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  • Report No.: LA-13981
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/809947 | External Link
  • Office of Scientific & Technical Information Report Number: 809947
  • Archival Resource Key: ark:/67531/metadc739753

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  • October 1, 2002

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • March 30, 2016, 12:45 p.m.

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Trujillo, M.F.; O'Rourke, P. & Torres, D. Generalizing the Thermodynamics State Relationships in KIVA-3V, report, October 1, 2002; New Mexico. (digital.library.unt.edu/ark:/67531/metadc739753/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.