Measurements of Soot Temperature and Soot Volume Fraction in a Diffusion Flame using a Digital Camera

摘要

Temperature and soot volume fraction were measured in a laminar axisymmetric flame with a digital camera. The camera was a Nikon D700, modified by removing the IR cut filter and the anti-aliasing filter. Temperatures were obtained using ratio pyrometry at 550, 650, and 900 nm following deconvolution. Measurements were made for an 88 mm high laminar ethylene/air diffusion flame in co-flow on a burner with an 11.1 mm inside diameter. Temperatures were measured in the range of 1250-2000 K. Soot volume fractions were measured in the range of 0.2-10 ppm. The results agreed with past measurements for this flame. The new diagnostics provide a convenient. and economical way to perform these measurements with good accuracy and spatial resolution.