caa a22 4500 606197958 CHVBK 20210128100931.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00348-015-1917-7 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1917-7 An experimental and theoretical investigation of spray characteristics of impinging jets in impact wave regime [Elektronische Daten] [N. Rodrigues, V. Kulkarni, J. Gao, J. Chen, P. Sojka] The current study focuses on experimentally and theoretically improving the characterization of the drop size and drop velocity for like-on-like doublet impinging jets. The experimental measurements were made using phase Doppler anemometry (PDA) at jet Weber numbers We j corresponding to the impact wave regime of impinging jet atomization. A more suitable dynamic range was used for PDA measurements compared to the literature, resulting in more accurate experimental measurements for drop diameters and velocities. There is some disagreement in the literature regarding the ability of linear stability analysis to accurately predict drop diameters in the impact wave regime. This work seeks to provide some clarity. It was discovered that the assumed uniform jet velocity profile was a contributing factor for deviation between diameter predictions based on models in the literature and experimental measurements. Analytical expressions that depend on parameters based on the assumed jet velocity profile are presented in this work. Predictions based on the parabolic and 1/7th power law turbulent profiles were considered and show better agreement with the experimental measurements compared to predictions based on the previous models. Experimental mean drop velocity measurements were compared with predictions from a force balance analysis, and it was observed that the assumed jet velocity profile also influences the predicted velocities, with the turbulent profile agreeing best with the experimental mean velocity. It is concluded that the assumed jet velocity profile has a predominant effect on drop diameter and velocity predictions. Springer-Verlag Berlin Heidelberg, 2015 Rodrigues N. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut Kulkarni V. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut Gao J. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut Chen J. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut Sojka P. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-13 0723-4864 56:3<1 2015 56 348 https://doi.org/10.1007/s00348-015-1917-7 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/s00348-015-1917-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodrigues N. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Kulkarni V. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Gao J. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Chen J. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Sojka P. School of Mechanical Engineering, Purdue University, 47906, West Lafayette, IN, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-13 0723-4864 56:3<1 2015 56 348