caa a22 4500 606198911 CHVBK 20210128100936.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00348-014-1888-0 doi (NATIONALLICENCE)springer-10.1007/s00348-014-1888-0 Physics-based scaling laws for confined and unconfined transverse jets [Elektronische Daten] [D. Forliti, D. Salazar, A. Bishop] An experimental study was conducted to explore the mixing properties of single and multiple confined transverse jets. A new physics-based scaling law variable was developed based on unconfined transverse jet trajectories. This variable accounts for both entrainment and drag momentum transport mechanisms that cause the jet deflection. The utility of this parameter under confined conditions was considered. It was observed that this new scaling parameter does correlate both qualitative and quantitative measures of the mean mixture properties, in particular prior to any jet-wall interactions. It was found that no local optimum mixing condition was present for two and three jets. For six jets, the behavior changed dramatically, with the emergence of a local optimum mixing state that is consistent with previous data collected for gas turbine geometries (Holdeman in Prog Energy Combust Sci 19:31-70, 1993). It is apparent that the local optimum observed for six jets involves jet penetration to a finite radial position while spreading in the cross plane, leading to the jets blending together resulting in a highly uniform mean mixture fraction distribution. When the number of jets is three or less, this blending process cannot occur due to the excessive distance between the jets. Jet impaction at the pipe center facilitates mixing for two and three jets, while degrading uniformity for six jets. © Springer-Verlag Berlin Heidelberg (outside the USA), 2015 Forliti D. Sierra Lobo, Inc., 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut Salazar D. Sierra Lobo, Inc., 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut Bishop A. Air Force Research Laboratory, 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-16 0723-4864 56:2<1 2015 56 348 https://doi.org/10.1007/s00348-014-1888-0 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/s00348-014-1888-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Forliti D. Sierra Lobo, Inc., 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut NATIONALLICENCE 700 1- Salazar D. Sierra Lobo, Inc., 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut NATIONALLICENCE 700 1- Bishop A. Air Force Research Laboratory, 10 East Saturn Blvd., 93524, Edwards AFB, CA, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-16 0723-4864 56:2<1 2015 56 348