Burner Test Rig

• Optical measurement of the influence of defects in the flame on the exhaust gas temperature profile
• Validation of numerical simulation models

The burner consists of a pilot flame (diffusion flame) and main flame (premixed flame). A Roots-blower supplies the test rig with combustion air, set into rotation by a variable swirl generator and mixed with the gas of the main flame before the ignition in the pilot flame.

The air-cooled flame tube of the test rig consists of 4 segments. Each segment has a number of differently sized access points. In the first segment, optical studies with the particle image velocimetry (PIV ) can be performed directly on the flame through five optical access points of diameter 90 mm (see Figure 3). A special feature of the test bed is a segment with an integrated quartz-glass-tube (see Figure 1). This allows tomographic measurements using the background oriented schlieren method (BOS). The maximum wall-temperature of the segments, which are made of Alloy 800, is 800 °C. Al2O3 moldings can be used to increase the wall-temperatures up to 1 250 °C.