@article{2019-00196, abstract = {The second part of this experimental analysis, presented in this paper, seeks to go deep on the character- ization of the Spray C and Spray D nozzles from the Engine Combustion Network, investigating the pen- etration of fuel spray at reacting conditions alongside characteristic parameters of combustion such as ignition delay and lift-off length. Both ECN mono-orifice injectors have similar nozzle flow capacity but different conicity degrees and corner sharpness, being Spray C more susceptible to cavitate. Schlieren imaging technique was employed to quantitatively measure reactive penetration and ignition delay, while lift-off length was identified through OH⁄ chemiluminescence. As in the inert part of this research, n-dodecane and commercial diesel were selected for the tests, thereby the effect of the fuel properties in the measured parameters was analyzed. Also, once again the concept of R-parameter, defined as the penetration derivative respect to the square root of time was calculated to delve into the penetration behavior. The experiments were performed in a constant pressure-flow facility able to reproduce engine-like thermodynamic conditions. Results revealed that R-parameter evolution can be divided in four stages: an inert zone, a ‘bump', a ‘valley' part and a quasi-steady one that overlaps the previous inert part. Those stages are highly governed by ambient temperature and oxygen concentration. Nozzle geometry and fuel properties demonstrated to have a noteworthy influence on all measured parameters.}, author = {Payri, Raul and Salvador, Francisco Javier and Gimeno, Jaime and Peraza, Jes{\'{u}}s E}, doi = {10.1016/j.enconman.2016.07.079}, file = {:C$\backslash$:/Users/marcarta/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Payri et al. - 2016 - Experimental study of the injection conditions influence over n-dodecane and diesel sprays with two ECN single-hol.pdf:pdf}, issn = {0196-8904}, journal = {Energy Conversion and Management}, keywords = {Chemiluminescence,ECN nozzles,Fuels,Ignition delay,Inert conditions,Lift-off length,Liquid length,Schlieren,Spray angle,Tip penetration}, pages = {1157--1167}, publisher = {Elsevier Ltd}, title = {Experimental study of the injection conditions influence over n-dodecane and diesel sprays with two ECN single-hole nozzles. Part II: Reactive atmosphere}, url = {http://dx.doi.org/10.1016/j.enconman.2016.07.079}, volume = {126}, year = {2016} }