caa a22 4500 44536954X CHVBK 20180317142941.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00340-011-4436-0 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4436-0 Kinetics of I2 and HI photodissociation with implications in flame diagnostics [Elektronische Daten] [Y. Zhao, C. Tong, L. Ma] This paper investigates the application of iodine (I2) tracer in reactive flows to image the concentration filed by using photodissociation spectroscopy (PDS). The PDS technique first uses a short laser pulse to completely photodissociate iodine-containing species into iodine atoms, and then uses a second laser pulse to image the iodine atoms. Due to the completeness and rapidity of the photodissociation (PD), the concentration of I atoms after PD represents that of the iodine element seeded into the flow, which forms a conserved scalar and can be used to image the concentration field. The feasibility of the PDS technique is evaluated in three steps. First, a multi-level kinetic model was developed to capture the major physics relevant to the PDS technique. Second, controlled experiments were conducted to validate the multi-level kinetic model. Third, the validated model was applied to evaluate the applicable range and accuracy of the PDS technique in representative hydrocarbon flames. The results suggest a simple approach to implement the PDS technique using I2 seeding in flames, which can provide good accuracy across a wide range of mixture fractions and strain rates. Springer-Verlag, 2011 Zhao Y. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut Tong C. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut Ma L. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut Applied Physics B Springer-Verlag 104/3(2011-09-01), 689-698 0946-2171 104:3<689 2011 104 340 https://doi.org/10.1007/s00340-011-4436-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4436-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao Y. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut NATIONALLICENCE 700 1- Tong C. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut NATIONALLICENCE 700 1- Ma L. Department of Mechanical Engineering, Clemson University, 29631, Clemson, SC, USA aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 104/3(2011-09-01), 689-698 0946-2171 104:3<689 2011 104 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer