EXPERIMENTAL INVESTIGATION OF NOZZLE ASPECT RATIO EFFECTS ON UNDEREXPANDED HYDROGEN JET RELEASE CHARACTERISTICS.
作者： A.J. Ruggles , I.W. Ekoto
DOI: 10.1016/J.IJHYDENE.2014.04.143
关键词: Optics 、 Shock (mechanics) 、 Flow (psychology) 、 Schlieren imaging 、 Nozzle 、 Jet (fluid) 、 Aspect ratio (image) 、 Dispersion (optics) 、 Rayleigh scattering 、 Mechanics 、 Chemistry
摘要: Abstract Most experimental investigations of underexpanded hydrogen jets have been limited to circular nozzles in an attempt better understand the fundamental jet-exit flow physics and model this behaviour with pseudo source models. However, realistic compressed storage leak exit geometries are not always expected be circular. In present study, jet dispersion characteristics from rectangular slot aspect ratios 2 8 were investigated compared equivalent nozzle. Schlieren imaging was used observe shock structure while quantitative Planar Laser Rayleigh Scattering measure downstream characteristics. These results provide physical insight much needed validation data for development.
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