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2016:program:dragan_poljak_and_mirko_jakic [2016/06/28 20:02] berislav created |
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| ====== On the time domain solution methods in classical electromagnetics ====== | ====== On the time domain solution methods in classical electromagnetics ====== | ||
| - | Dragan Poljak and Mirko Jakić | + | **Dragan Poljak and Mirko Jakić** |
| + | \\ //Faculty of Electric Engineering, Mechanical Engineering and Naval Architecture//, University of Split; //Faculty of Humanities and Social Sciences//, University of Split | ||
| + | <blockquote> | ||
| The paper deals with the time domain techniques used within the framework of the classical field theory for the solution of electromagnetic phenomena. Direct time domain solution methods based on differential and integral equation formulations are considered. Illustrative computational examples are related to transient analysis of grounding systems and penetration of the transient electric field from dipole antennas used in ground penetrating radar (GPR) applications. | The paper deals with the time domain techniques used within the framework of the classical field theory for the solution of electromagnetic phenomena. Direct time domain solution methods based on differential and integral equation formulations are considered. Illustrative computational examples are related to transient analysis of grounding systems and penetration of the transient electric field from dipole antennas used in ground penetrating radar (GPR) applications. | ||
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| Note that in applied electromagnetics the advanced potentials are always dropped out and regarded as non-physical. Nevertheless, the linear nature of the wave equation in principle allows the advanced solutions to represent radiation phenomena accurately. | Note that in applied electromagnetics the advanced potentials are always dropped out and regarded as non-physical. Nevertheless, the linear nature of the wave equation in principle allows the advanced solutions to represent radiation phenomena accurately. | ||
| - | On the basis of the fact that convergent waves represented by the advanced potentials, though mathematically possible, are never observed in nature (Water waves in a pond do not converge ejecting a stone…) they are eliminated by prescribing certain set of boundary and initial conditions, or even invoking the principle of causality of natural phenomena. Finally, the problem of a back-reaction force (radiation reaction force, radiation resistance) experienced by an accelerated charge (in the process of losing energy by radiation) is discussed in the paper, as well. | + | On the basis of the fact that convergent waves represented by the advanced potentials, though mathematically possible, are never observed in nature (Water waves in a pond do not converge ejecting a stone…) they are eliminated by prescribing certain set of boundary and initial conditions, or even invoking the principle of causality of natural phenomena. Finally, the problem of a back-reaction force (radiation reaction force, radiation resistance) experienced by an accelerated charge (in the process of losing energy by radiation) is discussed in the paper, as well.</blockquote> |