Effects of inter-pulse coupling on nanosecond pulsed high frequency discharge ignition in a flowing mixture

X Mao, H Zhong, Z Wang, T Ombrello, Y Ju - Proceedings of the …, 2023 - Elsevier
This work numerically investigates the effects of non-equilibrium nanosecond plasma
discharge pulse repetition frequency, pulse number, and flow velocity on the critical ignition …

Large eddy simulation of plasma assisted ignition: Effects of pulse repetition frequency, number of pulses, and pulse energy

TS Taneja, T Ombrello, J Lefkowitz, S Yang - Combustion and Flame, 2024 - Elsevier
The impacts of the pulse repetition frequency (PRF), number of pulses, and energy per pulse
in a train of nanosecond discharge pulses on the ignition of a flowing lean premixed …

Investigation of the impact of NRP discharge frequency on the ignition of a lean methane-air mixture using fully coupled plasma-combustion numerical simulations

N Barleon, L Cheng, B Cuenot, O Vermorel… - Proceedings of the …, 2023 - Elsevier
The ignition of an atmospheric pressure laminar premixed methane/air mixture by
Nanosecond Repetitively Pulsed (NRP) discharges in a pin-pin configuration is studied …

On pulse-to-pulse coupling in low-temperature filamentary plasma-assisted ignition in methane-air flows

R Patel, J van Oijen, S Nijdam… - Plasma Sources Science …, 2023 - iopscience.iop.org
This work aims to characterize the effects of pulse repetition rate (PRR) and flow speed on
dielectric barrier discharge (DBD) plasma pulse-to-pulse coupling and its ability to ignite …

Scramjet cavity ignition using nanosecond-pulsed high-frequency discharges

TM Ombrello, SD Hammack, CD Carter, K Busby… - Combustion and …, 2024 - Elsevier
Ignition of an ethylene-fueled cavity in Mach-2 flow was performed using nanosecond-
pulsed high-frequency discharges (NPHFDs) over a range of pulse repetition frequencies …

Actuation efficiency of nanosecond repetitively pulsed discharges for plasma-assisted swirl flames at pressures up to 3 bar

F Di Sabatino, TF Guiberti, JP Moeck… - Journal of Physics D …, 2020 - iopscience.iop.org
This study analyzes different strategies of plasma actuation of premixed swirl flames at
pressures up to 3 bar. A wide range of applied voltages and pulse repetition frequencies …

Elevated OH production from NPHFD and its effect on ignition

JK Lefkowitz, SD Hammack, CD Carter… - Proceedings of the …, 2021 - Elsevier
This work explores ignition in flowing mixtures of methane and air at 100 kPa and 295 K
initial temperature using a nanosecond-pulsed high-frequency discharge ignition source …

On pulse energy and energy distribution for ignition of flowing mixtures

S Shen, I Laso, N Rozin, JK Lefkowitz - Proceedings of the Combustion …, 2023 - Elsevier
The effects of energy distribution on ignition during a burst of nanosecond-pulsed high-
frequency discharges (NPHFD) are investigated in methane-air mixtures at a nominal flow …

Vortex rings drive entrainment and cooling in flow induced by a spark discharge

B Singh, LK Rajendran, J Zhang, PP Vlachos… - Physical Review …, 2020 - APS
Spark plasma discharges induce vortex rings and a hot gas kernel. We develop a model to
describe the late stage of the spark-induced flow and the role of the vortex rings in the …

Ignition kernel development in a reactive flow for nanosecond-pulsed high-frequency and DC arc discharges

KC Opacich, JS Heyne, JAT Gray, K Busby… - Combustion and …, 2022 - Elsevier
The development of energy efficient combustion systems is a critical technical objective in
the engine and power generation industries. This pursuit often prompts using conditions at …