Analysis of the efficiency of MHD cycle supported by nanosecond pulsed discharge pre-ionization. (1st March 2023)

• Record Type: Journal Article
• Authors: Starikovskiy, A Yu; Aleksandrov, N L; Shneider, M N
• Is Part Of: Plasma sources science & technology. Volume 32:Number 3(2023)
• Publication Date: 2023-03-01
• Subjects: nanosecond discharge -- dielectric barrier discharge -- electron energy distribution function -- nonequilibrium plasma -- Hall parameter -- supersonic flow -- MHD generator; Plasma (Ionized gases) -- Periodicals; 530.44
• DOI: 10.1088/1361-6595/acc053
• Languages: English
• ISSNs: 0963-0252

Abstract

Abstract: A numerical analysis of plasma generation by a nanosecond pulsed discharge in a strong magnetic field was performed. A 2D model of the plasma formation and decay in magnetohydrodynamic (MHD) channel has been elaborated. A comparison with experimental results demonstrates good agreement between calculated and measured plasma distribution in the channel. Preliminary analysis of the efficiency of the MHD-generator based on the nanosecond dielectric barrier discharge flow pre-ionization shows that the ratio of the power required to maintain ionization in the flow to the power extracted from the flow in MHD process is ∼3% for an ideal Faraday MHD generator with segmented electrodes with BY ∼ 5 T and supersonic flow speed uZ ∼ 1600 m s −1 . Such a high energy efficiency of the generator allows us to consider this concept of the generator as promising for energy generation and flow control.