Spray Characterization

Constant Volume Pre-burn Vessel

Constant Volume Pre-burn Vessel (CVP), also called Constant Volume Combustion Chamber (CVCC), is a research device used to study sprays under inert and reactive conditions. Our new CVCC has been designed to study sprays at extremely high pressures and temperatures. The vessel was designed to withstand pressures up to 600 bar and has been used to study spray atomization and combustion at 150 bar and 1000 K. The CVCC operation has also been validated with the characterization of the ECN spray A.


Figure 1. Pressure and temperature profiles in the CVCC during a pre-burn event used to reach ECN spray A target conditions.

Figure 2. Natural Flame Luminosity of spray combustion at 150 bar and 1000 K.

Figure 3. Picture of the new high-pressure CVCC 

Constant Pressure Flow (CPF) vessel


Figure 4. Illustration of the CPF

The Constant Pressure Flow (CPF) vessel is a research device used to reproduce the pressure and temperature conditions of a specific application. The pressurized and heated gas is continuously fed to the vessel at a constant flow. The CPF is equipped with optical access to allow using optical diagnostics to study sprays and jets phenomena. Our CPF has been sized to study the injection and mixing of fuels at pressures up to 10 bar and temperatures up to 400 K.