%0 Journal Article %A Thumann, Albert %A Ciezki, Helmut %D 2002 %I Begell House %K solid fuel ramjet, step combustor, boron, reacting multiphase flow visualization, colo(u)r Schlieren, PIV %N 1-6 %P 742-752 %R 10.1615/IntJEnergeticMaterialsChemProp.v5.i1-6.770 %T COMPARISON OF PIV AND COLOUR-SCHLIEREN MEASUREMENTS OF THE COMBUSTION PROCESS OF BORON PARTICLE CONTAINING SOLID FUEL SLABS IN A REARWARD FACING STEP COMBUSTOR %U https://www.dl.begellhouse.com/journals/17bbb47e377ce023,76f8e14974df93a8,4b7b75b44a839b4f.html %V 5 %X Particle Image Velocimetry (PIV) and Colour-Schlieren measurements have been used in order to investigate the combustion process of solid fuel slabs with boron particle addition in a step combustor under ramjet relevant conditions concerning the air inlet temperature. The high time-resolution of both measurement techniques (∼13 μs for Schlieren and 10 ns for PIV) shows a quasi-frozen state of the flow. With both techniques, large-scale vortical structures were observed in the outer zone above the diffusion flame in the developing boundary layer behind the recirculation zone. %8 2002-01-01