Details of the Thermal and Fluid Mechanic Conditions in the Combustion Vessel for Spray A

Figure 2.3.1.1 shows the average gas temperature at various positions in the “core” region of the vessel, relative to predictions based on a single relationship between Tcore and Tbulk (i.e., using only the measured pressure to predict Tcore). Along the axis of the spray, the gas temperature is uniform within 1%, except for a measurement point in the boundary layer only 1 mm in front of the injector tip. Temperature is also uniform along the same horizontal plane (y = 0, z = ±15 mm) outside of the spray. The most significant variation is in the vertical direction (y = ±15 mm, z = 0) where the temperature varies by ± 4% for a vertical change of ± 15 mm. This vertical stratification is obviously caused by buoyancy effects. Please see Meijer 2012 for more details.

Figure 2.3.1.1 Average gas temperature in the “core” region of the combustion vessel at Spray A conditions, 0% O2