Finite Difference Numerical Method: Applications in Lightning Electromagnetic Pulse and Heat Diffusion

The finite difference time domain (FDTD) is a technique of the numerical method and simple but powerful versatile tool that has been widely applied in many scientific engineering problems. A typical application dealing with electromagnetic (EM) wave interactions physical structures. This used to solve governing equations various systems through obtaining approximations time-dependent differential for computer simulations. paper demonstrates accuracy versatility FDTD by applying it examine effect lightning pulse (LEMP) on transmission line using cross-linked polyethylene (XLPE) insulated power cable, as well analyze heat diffusion microchip sink made from Aluminium Alloy 6061. LEMP showed higher values parameters, larger voltages will be induced bigger (FD) parameters give more accurate model subject stability criterion. Accurate modelling ensures appropriate mitigating techniques can deployed reduce or eliminate damaging these electrical and/or electronic devices/systems. Similarly, proper modeling provides ability closely estimate at product design stage such confirmed workable before manufacture; thereby saving cost. Keywords—Finite Difference Method, Finite Time Domain, Engineering Applications, Lightning Electromagnetic Pulse, Heat Diffusion.