Effect of Ambient Gas Density
High-Speed Schlieren Movies of Diesel Sprays
| Parameter | Low Density | High Density |
|---|---|---|
| Ambient O2 [%] | 21 | 21 |
| Ambient Temperature [K] | 1000 | 1000 |
| Ambient Density [kg/m3] | 14 | 58 |
| ΔPinj [MPa] | 136 | 137 |
| Orifice Diameter [mm] | 0.260 | 0.260 |
Fuel is #2 diesel fuel. Injector tip to wall is 109 mm.
The spray penetration rate decreases with increasing ambient density (Naber, 1996) because of higher momentum exchange with the ambient.