caa a22 4500 606199128 CHVBK 20210128100937.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00348-015-2076-6 doi (NATIONALLICENCE)springer-10.1007/s00348-015-2076-6 Measurement of density in axisymmetric jets using a novel background-oriented schlieren (BOS) technique [Elektronische Daten] [Dominic Tan, Daniel Edgington-Mitchell, Damon Honnery] A novel application of the adaptive Fourier-Hankel (AFH) Abel algorithm to reconstruct the radial density distribution of axisymmetric jets is presented. The fluid is imaged using the non-intrusive path-integrated background-oriented schlieren (BOS) technique. BOS images are cross-correlated to obtain background displacements that are proportional to the first derivative of the refractive index. The critical step is deconvolving the projected displacements. The AFH method is applied to simulated displacement data to validate the use of averaged turbulent fluctuations that approximate an axisymmetric field. The influence of experimental noise and variations in the flow on the accuracy of the method is discussed. The limitations of the system are demonstrated by applying it to low- and high-Reynolds (Re) number jets. The high-Re jets are produced from a high-pressure fuel injector operating at nozzle pressure ratios of 2, 3, and 4. Springer-Verlag Berlin Heidelberg, 2015 Tan Dominic Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut Edgington-Mitchell Daniel Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut Honnery Damon Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut Experiments in Fluids Springer Berlin Heidelberg 56/11(2015-11-01), 1-11 0723-4864 56:11<1 2015 56 348 https://doi.org/10.1007/s00348-015-2076-6 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/s00348-015-2076-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tan Dominic Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Edgington-Mitchell Daniel Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Honnery Damon Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, 3800, Melbourne, VIC, Australia aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/11(2015-11-01), 1-11 0723-4864 56:11<1 2015 56 348