Generalizing the Thermodynamics State Relationships in KIVA-3V
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.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 809947
- Report Number(s):
- LA-13981; TRN: US200310%%71
- Resource Relation:
- Other Information: Supercedes report DE00809947; PBD: 1 Oct 2002; PBD: 1 Oct 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
KIVA-3V: A block-structured KIVA program for engines with vertical or canted valves
KIVA-3V, Release 2: Improvements to KIVA-3V