TY - GEN
T1 - Effects of the laser intensity profile on ignition of hydrogen-air mixture
AU - Pokharel, Sagar
AU - Tropina, Albina A.
AU - Shneider, Mikhail N.
N1 - Publisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2021
Y1 - 2021
N2 - We consider ignition of the lean-hydrogen-air mixture using a combination of ultraviolet and near-infrared laser pulses. A two-dimensional three-temperature plasma model coupled with Navier-Stokes equations was used for the numerical simulations. The dependence of the ignition kernel dynamics on laser defocusing is reported. The results showed that an offset in peak of gas temperature and radical species caused by defocusing effect affects the hot ignition spot location.
AB - We consider ignition of the lean-hydrogen-air mixture using a combination of ultraviolet and near-infrared laser pulses. A two-dimensional three-temperature plasma model coupled with Navier-Stokes equations was used for the numerical simulations. The dependence of the ignition kernel dynamics on laser defocusing is reported. The results showed that an offset in peak of gas temperature and radical species caused by defocusing effect affects the hot ignition spot location.
UR - http://www.scopus.com/inward/record.url?scp=85099920831&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85099920831&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85099920831
SN - 9781624106095
T3 - AIAA Scitech 2021 Forum
SP - 1
EP - 9
BT - AIAA Scitech 2021 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
Y2 - 11 January 2021 through 15 January 2021
ER -