A high pressure and high temperature evaporation model was implemented in the KIVA-3 multidimensional engine simulation. The most significant features of the new evaporation model are: the effects of Stefan flow on transfer rates are included; internal circulation is accounted using the effective conductivity model of Abramzon and Sirignano [1]; equilibrium composition is calculated at high pressures using a real gas equation of state; and properties are evaluated as functions of temperature, pressure and composition. The evaporation of a continuous spray of n-dodecane injected in a chamber pressurized with nitrogen gas was simulated using the two models. Predictions of the evaporation rate, the spray penetration and fuel vapor distribution by the two models were significantly different. The differences persisted over a range of ambient pressures and temperatures, injection velocities, initial droplet sizes and fuel volatilities. Predictions of fuel vapor distribution using the proposed evaporation model were in improved agreement with evaporating spray measurements compared to the original KIVA evaporation model.
A High Temperature and High Pressure Evaporation Model for the KIVA-3 Code
Sae Technical Papers
International Congress & Exposition ; 1996
1996-02-01
Aufsatz (Konferenz)
Englisch
A High Temperature and High Pressure Evaporation Model for the KIVA-3 Code
Kraftfahrwesen | 1996
|Improvement of the Pressure Solver in KIVA
SAE Technical Papers | 1999
|Improvement of the Pressure Solver in KIVA
British Library Conference Proceedings | 1999
|Improvement of the pressure solver in KIVA
Kraftfahrwesen | 1999
|Engine Flow Calculations Using a Reynolds Stress Model in the Kiva-II Code
SAE Technical Papers | 1996
|