caa a22 4500 606197745 CHVBK 20210128100930.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00348-015-2087-3 doi (NATIONALLICENCE)springer-10.1007/s00348-015-2087-3 Flash X-ray measurements on the shock-induced dispersal of a dense particle curtain [Elektronische Daten] [Justin Wagner, Sean Kearney, Steven Beresh, Edward DeMauro, Brian Pruett] The interaction of a Mach 1.67 shock wave with a dense particle curtain is quantified using flash radiography. These new data provide a view of particle transport inside a compressible, dense gas-solid flow of high optical opacity. The curtain, composed of 115-µm glass spheres, initially spans 87% of the test section width and has a streamwise thickness of about 2mm. Radiograph intensities are converted to particle volume fraction distributions using the Beer-Lambert law. The mass in the particle curtain, as determined from the X-ray data, is in reasonable agreement with that given from a simpler method using a load cell and particle imaging. Following shock impingement, the curtain propagates downstream and the peak volume fraction decreases from about 23 to about 4% over a time of 340µs. The propagation occurs asymmetrically, with the downstream side of the particle curtain experiencing a greater volume fraction gradient than the upstream side, attributable to the dependence of particle drag on volume fraction. Bulk particle transport is quantified from the time-dependent center of mass of the curtain. The bulk acceleration of the curtain is shown to be greater than that predicted for a single 115-µm particle in a Mach 1.67 shock-induced flow. Springer-Verlag Berlin Heidelberg (outside the USA), 2015 Wagner Justin Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Kearney Sean Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Beresh Steven Sandia National Laboratories, 87185, Albuquerque, NM, USA aut DeMauro Edward Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Pruett Brian Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Experiments in Fluids Springer Berlin Heidelberg 56/12(2015-12-01), 1-12 0723-4864 56:12<1 2015 56 348 https://doi.org/10.1007/s00348-015-2087-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-2087-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wagner Justin Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Kearney Sean Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Beresh Steven Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- DeMauro Edward Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Pruett Brian Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/12(2015-12-01), 1-12 0723-4864 56:12<1 2015 56 348