TY - GEN
T1 - Theoretical and numerical analysis of discharge characteristics in pulsed electromagnetic accelerators
AU - Yang, Lei
AU - Liu, Xiang Yang
AU - Wang, Si Yu
AU - Wang, Ning Fei
PY - 2013
Y1 - 2013
N2 - Discharge is critical physical process in pulsed electromagnetic accelerators for arc plasma jet device, and its characteristics directly determines the accelerator performance. The mechanisms of discharge plasma and flow in the accelerator are analyzed by magnetohydrodynamics (MHD). The model is coupled with electric circuit model based on weakly nonideal plasma conductivity and ablation model. Calculation results show that there is some nonideal plasma region which has important effects on electrical conductivity; most ablated gases are ionized at the half cycle of the discharge time and are accelerated by Lorentz force to high exhaust velocity; electrical conductivity, plasma temperature and density are increasing with discharge energy unleashed, and gradually reduce in the post-discharge.
AB - Discharge is critical physical process in pulsed electromagnetic accelerators for arc plasma jet device, and its characteristics directly determines the accelerator performance. The mechanisms of discharge plasma and flow in the accelerator are analyzed by magnetohydrodynamics (MHD). The model is coupled with electric circuit model based on weakly nonideal plasma conductivity and ablation model. Calculation results show that there is some nonideal plasma region which has important effects on electrical conductivity; most ablated gases are ionized at the half cycle of the discharge time and are accelerated by Lorentz force to high exhaust velocity; electrical conductivity, plasma temperature and density are increasing with discharge energy unleashed, and gradually reduce in the post-discharge.
KW - Discharge characteristics
KW - Magnetohydrodynamics
KW - Numerical analysis
KW - Pulsed electromagnetic accelerators
UR - https://www.scopus.com/pages/publications/84885085697
U2 - 10.4028/www.scientific.net/AMR.765-767.805
DO - 10.4028/www.scientific.net/AMR.765-767.805
M3 - Conference contribution
AN - SCOPUS:84885085697
SN - 9783037857984
T3 - Advanced Materials Research
SP - 805
EP - 808
BT - Advanced Information and Computer Technology in Engineering and Manufacturing, Environmental Engineering
T2 - 2013 International Conference on Advances in Materials Science and Manufacturing Technology, AMSMT 2013
Y2 - 18 May 2013 through 19 May 2013
ER -