Numerical Simulation Study of Electromagnetic Pulse in Low-Altitude Nuclear Explosion Source Regions

• DOI: 10.3390/electronics14020337
• Publication Date: 2025-01-16T11:46:10Z
• Authors: Zhaomin Li; Jiarong Dong; Bing Wei; Xinbo He
• Keywords: Electromagnetic pulse; Nuclear explosion

A nuclear electromagnetic pulse (NEMP) is the fourth effect of a explosion, characterized by strong field that can instantly damage electronic devices. To investigate spatial value distribution characteristics source region low-altitude NEMPs, this study employed finite-difference time-domain (FDTD) method based on rotating ellipsoidal hyperbolic coordinate system. Due to intense variations near explosion center, non-uniform grids were for both and temporal steps, an OpenMP parallel algorithm was utilized enhance computational efficiency. Analysis focused following two scenarios: varying angles at constant distance distances angle, considering transverse magnetic (TM) electric (TE) waves. The results indicate differ between wave types. For TM waves, fields share same polarity, but their waveform polarities are opposite above below center. TE exactly opposite. Compared with wave, has stronger peak narrower widths lower overall energy. This research provides significant support development detection technology offers theoretical foundations protection surrounding environmental facilities.