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International Journal of Energetic Materials and Chemical Propulsion
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v5.i1-6.770
pages 742-752 COMPARISON OF PIV AND COLOUR-SCHLIEREN MEASUREMENTS OF THE COMBUSTION PROCESS OF BORON PARTICLE CONTAINING SOLID FUEL SLABS IN A REARWARD FACING STEP COMBUSTOR
Albert Thumann
DLR Space Propulsion, Lampoldshausen, D-74239 Hardthausen, Germany
Helmut K. Ciezki
German Aerospace Center (DLR), Institute of Space Propulsion, 74239 Hardthausen, Germany Краткое описаниеParticle 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. Ключевые слова: solid fuel ramjet, step combustor, boron, reacting multiphase flow visualization, colo(u)r Schlieren, PIV
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