Electrical and Electronic Engineering, Engineering, Modeling and Simulation, Numerical Analysis
3
Scopus Publications
12
Scholar Citations
3
Scholar h-index
Scopus Publications
Numerical Simulation of the Negative Downward Leader Current With the Associated Far-EM Field Generated by Lightning Asmaa Lakhdar IEEE Transactions on Electromagnetic Compatibility, 2024 In safeguarding electronic systems and structures against the potent electromagnetic pulses generated by lightning, it is crucial to integrate lightning protection measures with an understanding of the negative downward-leader lightning current and the corresponding electromagnetic field characteristics. This article undertakes a numerical analysis of both the lightning current stroke and the far-radiated EM field, incorporating a conductive ground and utilizing our revised MTLE model intended for elevated objects. Validated for its ability to predict the close EM field around the struck object, the model demonstrates efficacy in numerical simulations carried out using the finite-difference time-domain method to anticipate the far-EM field. By juxtaposing model predictions with real experimental data, the results reveal reasonable agreements, reflected in a low root-mean-square error.
New Approach to Revise the Spatiotemporal Lightning Current Distribution Models Intended for Tall Objects Asmaa Lakhdar, Abdenbi Mimouni, Zin-Eddine Azzouz IEEE Transactions on Electromagnetic Compatibility, 2022 In this article, we revised the commonly known engineering return stroke models for elevated objects, by taking into account the relativistic Doppler effect of the return stroke velocity shift. This revised model is applied to calculate the electromagnetic lightning field, struck by the Peissenberg tower using the finite difference time domain method in two-dimensions method. The simulation results are both compared with the results of the experimental measurements and with those obtained from the only two theoretical extending models existing in the literature that consider the presence of towers. Results show that the vertical lightning electric field is in perfect agreement with that measured experimentally, which means that this novel model was able to eliminate the nonphysical aspect of the transmitted current wave velocity from the tower top to the lightning channel observed in the hypothesis of the other authors and to reproduce in a more refined way the experimental measured electric field. The magnetic field behavior presents a concordance in the first peak and a slight difference in the tail waveform with that measured experimentally. These new formulations approximate the reality of the lightning radiation and, thus, allow to improve protection against its harmful effects.
Parameters Affecting the Polarity Inversion of the Vertical Electric Lightning Field to the CN-Tower Asmaa Lakhdar, Abdenbi Mimouni, Zineddine Azzouz Mathematical Modelling of Engineering Problems, 2021 The aim of this paper is to perform a parametric study in order to analyze factors having an effect on the vertical lightning field polarization to the CN-Tower in Canada, and estimate with numerical simulation, the horizontal distance for which the reversed polarity will occur. The calculation is performed using the Finite-Difference-Time-Domain technique in two dimensions (2D-FDTD), the spatial-temporal current propagation through the lightning channel and through the high structure is represented by the lumped-series voltage-source model. The obtained results show that the vertical electric lightning field behavior has a dual polarity, the transition from a negative waveform to a positive one is observed at different observation points localized near the elevated object influencing by each modification made to the tower-parameters, the medium conductivity and the return stroke speed value. These results can contribute to the understanding of the lightning-phenomenon and allow to solve the problems of electromagnetic compatibility.
RECENT SCHOLAR PUBLICATIONS
Electromagnetic Compatibility Assessment of Lightning Transients: A Spacetime Curvature Perspective L Asmaa The 3rd Electrical Engineering International Conference (EEIC’25), pp. 171–175. , 2025 2025
Comparative Analysis of Electromagnetic Fields in Flat vs. Curved Spacetime Using Maxwell’s Equations A Lakhdar The First International Congress on Recent Advances in Mathematical … , 2024 2024
Numerical Simulation of the Negative Downward Leader Current With the Associated Far-EM Field Generated by Lightning A Lakhdar IEEE Transactions on Electromagnetic Compatibility 66 (1), 240-246 , 2024 2024 Citations: 3
Guide pratique des Méthodes Numériques Appliquées dans l'Optimisation - Cours et exercices résolus (mathématiquement et numériquement par Matlab) L Asmaa Éditions Universitaires Européennes (EUE), ISBN-10 : 6206702855 ISBN-13 … , 2024 2024
Contribution à l’étude du rayonnement électromagnétique de la foudre en présence d’un sol de conductivité finie et d’une tour élevée A lakhdar Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf , 2022 2022 Citations: 1
New Approach to revise the spatiotemporal lightning current distribution models intended for tall objects A Lakhdar, A Mimouni, ZE Azzouz IEEE Transactions on Electromagnetic Compatibility 64 (4), 1190-1197 , 2022 2022 Citations: 3
Parameters Affecting the Polarity Inversion of the Vertical Electric Lightning Field to the CN-Tower. A Lakhdar, A Mimouni, Z Azzouz Mathematical Modelling of Engineering Problems 8 (1) , 2021 2021 Citations: 5
Gaussian Function Example to Calculate the Electromagnetic Wave Propagation Using the 2D-TLM Numerical Method A lakhdar ICSFA-2020 , 2020 2020
Electromagnetic Field Behavior in The Vicinity of a Tower Struck by Lightning - Tokyo Skytree Tower Case ZA A.lakhdar,A.Mimouni 11th national Conference of high voltage, Oran, Algeria, 1-6 , 2019 2019
simulation of transient grounding behavior for horizontal electrode and 1x1 mesh grid with FDTD, including soil ionization AM H Benkharroubi, A Mimouni, A.bendaoud, Asmaa Lakhdar, Khaled Hebri, Adil ... 9ieme conférence CNHT, Aghwat, Algeria , 2013 2013
Asmaa Lakhdar Analytical absorbing boundary conditions for lightning electromagnetic field calculation using the FDTD Method AM Khaled Hebri,Asmaa Lakhdar, A Mimouni, Z Azzouz, Khaled Hebri, Adil F, H ... 9ieme conférence CNHT, Aghwat, Algeria, 116-121 , 2013 2013
underground electric fields in the immediate vicinity of tower struck by lightning AM Asmaa Lakhdar, A Mimouni, Z Azzouz, Khaled Hebri, Adil F, H Benkharroubi 9ieme conférence CNHT, Aghwat, Algeria, 122-126 , 2013 2013
La méthode de modélisation TLM 2D: Transmission Line Modeling or Matrix BG A.lakhdar ISBN-13: 978-6131519284//ISBN-10: 613151 261, 64 , 2012 2012
MOST CITED SCHOLAR PUBLICATIONS
Parameters Affecting the Polarity Inversion of the Vertical Electric Lightning Field to the CN-Tower. A Lakhdar, A Mimouni, Z Azzouz Mathematical Modelling of Engineering Problems 8 (1) , 2021 2021 Citations: 5
Numerical Simulation of the Negative Downward Leader Current With the Associated Far-EM Field Generated by Lightning A Lakhdar IEEE Transactions on Electromagnetic Compatibility 66 (1), 240-246 , 2024 2024 Citations: 3
New Approach to revise the spatiotemporal lightning current distribution models intended for tall objects A Lakhdar, A Mimouni, ZE Azzouz IEEE Transactions on Electromagnetic Compatibility 64 (4), 1190-1197 , 2022 2022 Citations: 3
Contribution à l’étude du rayonnement électromagnétique de la foudre en présence d’un sol de conductivité finie et d’une tour élevée A lakhdar Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf , 2022 2022 Citations: 1
Electromagnetic Compatibility Assessment of Lightning Transients: A Spacetime Curvature Perspective L Asmaa The 3rd Electrical Engineering International Conference (EEIC’25), pp. 171–175. , 2025 2025
Comparative Analysis of Electromagnetic Fields in Flat vs. Curved Spacetime Using Maxwell’s Equations A Lakhdar The First International Congress on Recent Advances in Mathematical … , 2024 2024
Guide pratique des Méthodes Numériques Appliquées dans l'Optimisation - Cours et exercices résolus (mathématiquement et numériquement par Matlab) L Asmaa Éditions Universitaires Européennes (EUE), ISBN-10 : 6206702855 ISBN-13 … , 2024 2024
Gaussian Function Example to Calculate the Electromagnetic Wave Propagation Using the 2D-TLM Numerical Method A lakhdar ICSFA-2020 , 2020 2020
Electromagnetic Field Behavior in The Vicinity of a Tower Struck by Lightning - Tokyo Skytree Tower Case ZA A.lakhdar,A.Mimouni 11th national Conference of high voltage, Oran, Algeria, 1-6 , 2019 2019
simulation of transient grounding behavior for horizontal electrode and 1x1 mesh grid with FDTD, including soil ionization AM H Benkharroubi, A Mimouni, A.bendaoud, Asmaa Lakhdar, Khaled Hebri, Adil ... 9ieme conférence CNHT, Aghwat, Algeria , 2013 2013
Asmaa Lakhdar Analytical absorbing boundary conditions for lightning electromagnetic field calculation using the FDTD Method AM Khaled Hebri,Asmaa Lakhdar, A Mimouni, Z Azzouz, Khaled Hebri, Adil F, H ... 9ieme conférence CNHT, Aghwat, Algeria, 116-121 , 2013 2013
underground electric fields in the immediate vicinity of tower struck by lightning AM Asmaa Lakhdar, A Mimouni, Z Azzouz, Khaled Hebri, Adil F, H Benkharroubi 9ieme conférence CNHT, Aghwat, Algeria, 122-126 , 2013 2013
La méthode de modélisation TLM 2D: Transmission Line Modeling or Matrix BG A.lakhdar ISBN-13: 978-6131519284//ISBN-10: 613151 261, 64 , 2012 2012
