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The purpose of this paper is to show the capability of the TLM method to handle temperature rising in strong heterogenous biological tissues exposed to various RF sources such as incident plane waves or near fields radiated by a PIFA antenna. The SAR and thermal distributions simulated in the head of the human Duke model are provided and...
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To estimate the temperature rise in biological tissues due to the interaction with the electromagnetic waves, the thermal aspect must be taken into account by solving the equation of Pennes. In this paper, we present a new numerical scheme based on the TLM method particularly suitable for dosimetry of highly heterogeneous environments. The...
The study of the interaction of the waves with the living requires taking into account the thermal aspect. To estimate the temperature in biological environments, the Pennes's equation must be solved. This paper presents a new numerical scheme based on the TLM method particularly suitable for the dosimetry in highly heterogeneous environments....
To control the temperature rise in biological tissues exposed to the electromagnetic waves, the thermal aspect must be taken into account by solving the bio-heat equation. In this paper, a new ;numerical scheme based on the TLM method, particularly suitable to highly heterogeneous environments, is applied for computing thermal distribution in...
To simulate the temperature elevation in biological tissues exposed to the electromagnetic waves, the thermal aspect must be taken into account by solving the bioheat equation. In this paper, a new numerical scheme based on the TLM method, particularly suitable to highly heterogeneous environments, is applied for computing thermal distribution...
Numerical dosimetry is a mandatory step in the designing process of any new EM device that operates in presence of living beings. One of its objectives is to ensure that a maximum Specific Absorption Rate (SAR) never exceeds the recommended values. In addition, including human models in simulations is necessary to evaluate the impact of human...
Modeling and characterizing low frequency antennas in realistic environments is considered as one of the most difficult computational problems. This complexity arises mainly from the multiscale nature of low-frequency scenarios. In this article, we present a block meshing technique with TLM to accurately represent the geometry of thin-wire...
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Finite Difference Time domain techniques have some interesting features for simulating Very Low Frequency (VLF) antennas in realistic environments. Such multi-scale problems can be solved by using an arbitrary oriented thin wire model. For the Transmission Line Matrix (TLM) method, the definition of the interaction domain that links the wire...
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The insatiable demand to optimize and engineer new functionalities in electromagnetic devices has risen their geometrical complexity to unprecedented levels. This usually results in computationally multiscale problems with some tiny components of great importance to the overall behavior of these devices. Block meshing is a powerful...
La modélisation et la caractérisation d'antennes basses fréquences dans des environnements réels sont considérées comme l'un des problèmes de calcul les plus difficiles. Cette complexité provient principalement de la nature multi-échelle des scénarios basse fréquence. Dans cet article, nous présentons une technique de maillage par blocs...
SPID5176211. The recent developments of thin wire model in Finite Difference Time domain techniques provide attractive tools for simulating VLF in real environment. Test simulations are reported in this paper in order to highlight the advantages and the drawbacks of each method implemented in different software.
La conception de nouveaux dispositifs micro-ondes et optiques nécessite de traiter des problèmes de calcul avec des complexités géométriques croissantes et de développer des schémas numériques plus rapides et plus efficaces. Le maillage par blocs est une technique puissante de réduction de ressources informatiques en termes de temps processeur...
The constant and rapid increase in connected devices popularity raises questions about their possible impact on living beings. Dosimetry is used to assess the levels of EM-exposure induced by these devices. Numerical methods become handy when measurements are impossible to conduct. These numerical techniques require 3D human models; however,...
To design any new EM-device, it is of great importance to have a good estimation of the specific absorption rate (SAR) distribution or the Power Density (PD) it induces in users or people in its proximity. Respecting the recommended SAR limits is mandatory for any new technology to go public. Moreover, the good knowledge of SAR/PD is critical...