Academic literature on the topic 'Perfectly Matched Layers (PML)'

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Journal articles on the topic "Perfectly Matched Layers (PML)"

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Zhang, Jianfeng, and Hongwei Gao. "Irregular perfectly matched layers for 3D elastic wave modeling." GEOPHYSICS 76, no. 2 (2011): T27—T36. http://dx.doi.org/10.1190/1.3533999.

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We have developed a perfectly matched layer (PML) absorbing boundary condition that can be imposed along an arbitrary geometric boundary in 3D elastic wave modeling. The scheme is developed by using the local coordinate system-based PML splitting equations and integral approach of the PML equations under a discretization of tetrahedral grids. However, no explicit coordinate transformations arise. The local coordinate system-based PML splitting equations make it possible to decay incident waves around the direction normal to the irregular geometric boundaries, instead of a coordinate axis direc
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Ge, Ju, Liping Gao, and Rengang Shi. "Well-Designed Termination Wall of Perfectly Matched Layers for ATS-FDTD Method." International Journal of Antennas and Propagation 2019 (June 2, 2019): 1–6. http://dx.doi.org/10.1155/2019/6343641.

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This paper presents a well-designed termination wall for the perfectly matched layers (PML). This termination wall is derived from Mur’s absorbing boundary condition (ABC) with special difference schemes. Numerical experiments illustrate that PML and the termination wall works well with ATS-FDTD(Shi et al. 2015). With the help of termination wall, perfectly matched layers can be decreased to two layers only; meanwhile, the reflection error still reaches -60[dB] when complex waveguide is simulated by ATS-FDTD.
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Bunting, Gregory, Arun Prakash, Timothy Walsh, and Clark Dohrmann. "Parallel Ellipsoidal Perfectly Matched Layers for Acoustic Helmholtz Problems on Exterior Domains." Journal of Theoretical and Computational Acoustics 26, no. 02 (2018): 1850015. http://dx.doi.org/10.1142/s2591728518500159.

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Exterior acoustic problems occur in a wide range of applications, making the finite element analysis of such problems a common practice in the engineering community. Various methods for truncating infinite exterior domains have been developed, including absorbing boundary conditions, infinite elements, and more recently, perfectly matched layers (PML). PML are gaining popularity due to their generality, ease of implementation, and effectiveness as an absorbing boundary condition. PML formulations have been developed in Cartesian, cylindrical, and spherical geometries, but not ellipsoidal. In a
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Chen, Yong H., Weng Cho Chew, and Michael L. Oristaglio. "Application of perfectly matched layers to the transient modeling of subsurface EM problems." GEOPHYSICS 62, no. 6 (1997): 1730–36. http://dx.doi.org/10.1190/1.1444273.

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Berenger's perfectly matched layers (PML) have been found to be very efficient as a material absorbing boundary condition (ABC) for finite‐difference time‐domain (FDTD) modeling of lossless media. In this paper, we apply the PML technique to truncate the simulation region of conductive media. Examples are given to show some possible applications of the PML technique to subsurface problems with lossy media. To apply the PML ABC for lossy media, we first modify the original 3-D Maxwell's equations to achieve PML at the boundaries of the simulation region. The modified equations are then solved b
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He, Yanbin, Tianning Chen, Jinghuai Gao, and Zhaoqi Gao. "Superior performance of optimal perfectly matched layers for modeling wave propagation in elastic and poroelastic media." Journal of Geophysics and Engineering 19, no. 1 (2022): 106–19. http://dx.doi.org/10.1093/jge/gxac002.

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Abstract The perfectly matched layer (PML) technique is a popular truncation method to model wave propagation in unbounded elastic media. Both numerical efficiency and high stability are important improvement areas in the field. In this study, we extend the optimal PML, previously proposed for acoustic media, to elastic and poroelastic media, which turns out to be more efficient and flexible than the classical PML. We investigate the accuracy and stability of the optimal PML by comparing it with the classical PML in several scenarios. First, the effectiveness of the optimal PML is studied usin
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Lei, Da, Liangyong Yang, Changmin Fu, Ruo Wang, and Zhongxing Wang. "The application of a novel perfectly matched layer in magnetotelluric simulations." GEOPHYSICS 87, no. 3 (2022): E163—E175. http://dx.doi.org/10.1190/geo2020-0393.1.

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Truncation boundaries are needed when simulating a region in magnetotelluric (MT) modeling. As an efficient alternative truncation boundary, perfectly matched layers (PMLs) have been widely applied in many high-frequency wavefield simulations. However, the governing equation of most electromagnetic exploration methods is for the diffusion field, in which the conduction current is significantly greater than the displacement current. Because the wave and diffusion fields have completely different relations for the frequency and constitutive parameters, conventional PMLs, which are mainly designe
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CHEW, W. C., and Q. H. LIU. "PERFECTLY MATCHED LAYERS FOR ELASTODYNAMICS: A NEW ABSORBING BOUNDARY CONDITION." Journal of Computational Acoustics 04, no. 04 (1996): 341–59. http://dx.doi.org/10.1142/s0218396x96000118.

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The use of perfectly matched layers (PML) has recently been introduced by Berenger as a material absorbing boundary condition (ABC) for electromagnetic waves. In this paper, we will first prove that a fictitious elastodynamic material half-space exists that will absorb an incident wave for all angles and all frequencies. Moreover, the wave is attenuative in the second half-space. As a consequence, layers of such material could be designed at the edge of a computer simulation region to absorb outgoing waves. Since this is a material ABC, only one set of computer codes is needed to simulate an o
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Bérenger, Jean-Pierre. "Perfectly Matched Layer (PML) for Computational Electromagnetics." Synthesis Lectures on Computational Electromagnetics 2, no. 1 (2007): 1–117. http://dx.doi.org/10.2200/s00030ed1v01y200605cem008.

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Hervella-Nieto, Luis M., Andrés Prieto, and Sara Recondo. "Computation of Resonance Modes in Open Cavities with Perfectly Matched Layers." Proceedings 54, no. 1 (2020): 2. http://dx.doi.org/10.3390/proceedings2020054002.

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During the last decade, several authors have addressed that the Perfectly Matched Layers (PML) technique can be used not only for the computation of the near-field in time-dependent and time-harmonic scattering problems, but also to compute numerically the resonances in open cavities. Despite such complex resonances are not natural eigen-frequencies of the physical system, the numerical determination of this kind of eigenvalues provides information about the model, what can be used in further applications. The present work will be focused on two main specific goals—firstly, the mathematical an
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Cao, Da, Naohisa Inoue, and Tetsuya Sakuma. "Finite element analysis of bending waves in Mindlin plates with Perfectly Matched Layers." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 5 (2023): 2527–34. http://dx.doi.org/10.3397/in_2022_0355.

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It is important to determine the boundary conditions of walls and floors precisely when simulating the building acoustics. For a certain room, the extension of the spans can be considered as infinite edges. The Perfect Matched Layer(PML) is an artificial absorbing domain for the wave propagations and is widely used in finite element analysis to simulate the acoustical free field conditions right now. In this paper, an effective PML technique for the plate structure will be presented. The PML formulation will be derived based on the Mindlin plate theory and the implementation method will be int
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Dissertations / Theses on the topic "Perfectly Matched Layers (PML)"

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Bao, Wentao. "A Simulation and Optimization Study of Spherical Perfectly Matched Layers." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1494166698903702.

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Erlandsson, Simon. "Evaluation, adaption and implementations of Perfectly Matched Layers in COMSOL Multiphysics." Thesis, KTH, Numerisk analys, NA, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280757.

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Perfectly matched layer (PML) is a commonly used method of absorbing waves at a computational boundary for partial differential equation (PDE) problems. In this thesis, methods for improving the usability of implementations in Comsol Multiphysics is addressed. The study looks at complex coordinate stretching PMLs in the context of Helmholtz equation using the finite element method (FEM). For a PML to work it has to be set up properly with parameters that takes into account the properties of the problem. It is not always straight forward. Some theory behind PMLs is presented and experimentation
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Appelö, Daniel. "Absorbing Layers and Non-Reflecting Boundary Conditions for Wave Propagation Problems." Doctoral thesis, KTH, Numerisk Analys och Datalogi, NADA, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-448.

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The presence of wave motion is the defining feature in many fields of application,such as electro-magnetics, seismics, acoustics, aerodynamics,oceanography and optics. In these fields, accurate numerical simulation of wave phenomena is important for the enhanced understanding of basic phenomenon, but also in design and development of various engineering applications. In general, numerical simulations must be confined to truncated domains, much smaller than the physical space were the wave phenomena takes place. To truncate the physical space, artificial boundaries, and corresponding boundary c
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Srinivasan, Harish. "FINITE ELEMENT ANALYSIS AND EXPERIMENTAL VERIFICATION OF SOI WAVEGUIDE LOSSES." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/485.

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Bending loss in silicon-on-insulator rib waveguides was calculated using conformal mapping of the curved waveguide to an equivalent straight waveguide. Finite-element analysis with perfectly matched layer boundaries was used to solve the vector wave equation. Transmission loss was experimentally measured as a function of bend radius for several SOI waveguides. Good agreement was found between simulated and measured losses, and this technique was confirmed as a good predictor for loss and for minimum bend radius for efficient design.
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Long, Zeyu. "Introduction of the Debye media to the filtered finite-difference time-domain method with complex-frequency-shifted perfectly matched layer absorbing boundary conditions." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/introduction-of-the-debye-media-to-the-filtered-finitedifference-timedomain-method-with-complexfrequencyshifted-perfectly-matched-layer-absorbing-boundary-conditions(441271dc-d4ea-4664-82e6-90bf93f5c2b7).html.

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The finite-difference time-domain (FDTD) method is one of most widely used computational electromagnetics (CEM) methods to solve the Maxwell's equations for modern engineering problems. In biomedical applications, like the microwave imaging for early disease detection and treatment, the human tissues are considered as lossy and dispersive materials. The most popular model to describe the material properties of human body is the Debye model. In order to simulate the computational domain as an open region for biomedical applications, the complex-frequency-shifted perfectly matched layers (CFS-PM
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Tomezyk, Jérôme. "Résolution numérique de quelques problèmes du type Helmholtz avec conditions au bord d'impédance ou des couches absorbantes (PML)." Thesis, Valenciennes, 2019. http://www.theses.fr/2019VALE0017/document.

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Dans cette thèse, nous étudions la convergence de méthode de type éléments finis pour les équations de Maxwell en régime harmonique avec condition au bord d'impédance et l'équation de Helmholtz avec une couche parfaitement absorbante(PML). On étudie en premier, la formulation régularisée de l'équation de Maxwell en régime harmonique avec condition au bord d'impédance (qui consiste à ajouter le term ∇ div à l'équation originale pour avoir un problème elliptique) et on garde la condition d'impédance comme une condition au bord essentielle. Pour des domaines à bord régulier, le caractère bien pos
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Silberstein, Éric. "Généralisation de la méthode modale de Fourier aux problèmes de diffraction en optique intégrée : application aux convertisseurs modaux par ingénierie des modes de Bloch." Paris 6, 2002. https://pastel.archives-ouvertes.fr/tel-00003101.

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Métral, Jérôme. "Modélisation et simulation numérique de l'écoulement d'un plasma atmosphérique pour l'étude de l'activité électrique des plasmas sur avion." Châtenay-Malabry, Ecole centrale de Paris, 2002. http://www.theses.fr/2002ECAP0868.

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Un gaz ionisé (ou plasma) présente la propriété d'absorber ou de réfléchir les ondes électromagnétiques radar, si son taux d'ionisation est suffisant. Cette propriété suscite un intérêt particulier pour des applications dans le domaine de l'aéronautique. L'objectif de cette thèse est de pouvoir prédire les caractéristiques (électriques et énergétique) d'un plasma d'air faiblement ionisé dans un écoulement à pression atmosphérique. La description du plasma repose sur un modèle à deux températures, inspiré des modèles hors- équilibre thermique. L'écoulement du plasma est alors décrit par un syst
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Duru, Kenneth. "Perfectly matched layers for second order wave equations." Licentiate thesis, Uppsala universitet, Avdelningen för teknisk databehandling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-124538.

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Numerical simulation of propagating waves in unbounded spatial domains is a challenge common to many branches of engineering and applied mathematics. Perfectly matched layers (PML) are a novel technique for simulating the absorption of waves in open domains. The equations modeling the dynamics of phenomena of interest are usually posed as differential equations (or integral equations) which must be solved at every time instant. In many application areas like general relativity, seismology and acoustics, the underlying equations are systems of second order hyperbolic partial differential equati
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Ramli, Khairun N. "Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods. Development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5443.

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The main objective of this research is to model and analyse complex electromagnetic problems by means of a new hybridised computational technique combining the frequency domain Method of Moments (MoM), Finite-Difference Time-Domain (FDTD) method and a subgridded Finite-Difference Time-Domain (SGFDTD) method. This facilitates a significant advance in the ability to predict electromagnetic absorption in inhomogeneous, anisotropic and lossy dielectric materials irradiated by geometrically intricate sources. The Method of Moments modelling employed a two-dimensional electric surface patch in
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Books on the topic "Perfectly Matched Layers (PML)"

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Bérenger, Jean-Pierre. Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7.

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Bérenger, Jean-Pierre. Perfectly matched layer (PML) for computational electromagnetics. Morgan & Claypool Publishers, 2007.

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Center, Langley Research, ed. The analysis and construction of perfectly matched layers for linearized Euler equations. National Aeronautics and Space Administration, Langley Research Center, 1997.

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L, Auriault, Cambuli F, and United States. National Aeronautics and Space Administration., eds. Perfectly matched layer for linearized Euler equations in open and ducted domains. American Institute of Aeronautics and Astronautics, 1998.

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Bérenger, Jean-Pierre. Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing AG, 2007.

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Bérenger, Jean-Pierre. Perfectly Matched Layer (PML) for Computational Electromagnetics. Morgan & Claypool Publishers, 2007.

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Berenger, Jean-Pierre. Perfect Matched Layer (PML) for Computational Electromagnetics (Synthesis Lectures on Computational Electromagnetics). Morgan and Claypool Publishers, 2007.

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Book chapters on the topic "Perfectly Matched Layers (PML)"

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Bérenger, Jean-Pierre. "The Two-Dimensional Perfectly Matched Layer." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_3.

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Bérenger, Jean-Pierre. "Some Extensions of the PML ABC." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_8.

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Gedney, Stephen D. "The Perfectly Matched Layer (PML) Absorbing Medium." In Introduction to the Finite-DifferenceTime-Domain (FDTD) Method for Electromagnetics. Springer International Publishing, 2011. http://dx.doi.org/10.1007/978-3-031-01712-4_6.

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Bérenger, Jean-Pierre. "The PML ABC for the FDTD Method." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_6.

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Bérenger, Jean-Pierre. "Time Domain Equations for the PML Medium." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_5.

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Bérenger, Jean-Pierre. "Generalizations and Interpretations of the Perfectly Matched Layer." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_4.

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Bérenger, Jean-Pierre. "Optmization of the PML ABC in Wave-Structure Interaction and Waveguide Problems." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_7.

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Bérenger, Jean-Pierre. "The Requirements for the Simulation of Free Space and a Review of Existing Absorbing Boundary Conditions." In Perfectly Matched Layer (PML) for Computational Electromagnetics. Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01696-7_2.

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Li, Jichun, and Yunqing Huang. "Perfectly Matched Layers." In Time-Domain Finite Element Methods for Maxwell's Equations in Metamaterials. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33789-5_8.

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Hebermehl, G., F. K. Hübner, R. Schlundt, T. Tischler, H. Zscheile, and B. Heinrich. "Perfectly matched layers in transmission lines." In Numerical Mathematics and Advanced Applications. Springer Milan, 2003. http://dx.doi.org/10.1007/978-88-470-2089-4_26.

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Conference papers on the topic "Perfectly Matched Layers (PML)"

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Jones, Simon. "Harmonic Response of a Layered Halfspace Using Reduced Finite Element Model With Perfectly-Matched Layer Boundaries." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65438.

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The current paper investigates the use of perfectly-matched layers (PML) as absorbing elements for a finite element (FE) model simulating a semi-infinite medium. This formulation is convenient for application of Craig-Bampton reduction (CBR), which significantly reduce the number active degrees-of-freedom in the model in an attempt to improve the computational efficiency. The results from this investigation suggest the PML elements worked seamlessly with the FE elements to approximate the elastodynamic response of a 2D layered halfspace subjected to a surface load; the wave energy appears to b
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Smithe, David, and Lars Ludeking. "PML (Perfectly Matched Layer) Implementation in the Magic Software." In IEEE Conference Record - Abstracts. 2005 IEEE International Conference on Plasma Science. IEEE, 2005. http://dx.doi.org/10.1109/plasma.2005.359396.

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Rao Changwei, Tian Yu, Gao Bo, Chen Yan, and Tong Ling. "A new modified perfectly matched layer( PML) without split-field." In 2008 International Conference on Microwave and Millimeter Wave Technology (ICMMT). IEEE, 2008. http://dx.doi.org/10.1109/icmmt.2008.4540507.

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Ji, Jinzu, Peilin Huang, and Yunpeng Ma. "Auxiliary differential equation (ADE) implementation of complex-frequency shifted perfectly matched layer (CFS-PML)." In First International Conference on Information Sciences, Machinery, Materials and Energy. Atlantis Press, 2015. http://dx.doi.org/10.2991/icismme-15.2015.42.

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Madsen, S., S. Krenk, and O. Hededal. "PERFECTLY MATCHED LAYER (PML) FOR TRANSIENT WAVE PROPAGATION IN A MOVING FRAME OF REFERENCE." In 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2014. http://dx.doi.org/10.7712/120113.4819.c1228.

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Huang, W. P., C. L. Xu, W. W. Lui, and K. Yokoyama. "The Perfectly Matched Layer (PML) Boundary Condition for the Simulation of Guided-Wave Optical Devices." In Integrated Photonics Research. OSA, 1996. http://dx.doi.org/10.1364/ipr.1996.imb5.

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Li, YiFeng, Olivier Bou Matar, Vladimir Preobrazhensky, and Philippe Pernod. "Convolution-Perfectly Matched Layer (C-PML) absorbing boundary condition for wave propagation in piezoelectric solid." In 2008 IEEE Ultrasonics Symposium (IUS). IEEE, 2008. http://dx.doi.org/10.1109/ultsym.2008.0382.

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Cipolla, Jeffrey L. "Design for a Hybrid Absorbing Element in the Time Domain Using PML and Infinite Element Concepts." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37159.

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We introduce an approach blending the Perfectly Matched Layer (PML) and infinite element paradigms, to achieve better performance and wider applicability than either approach alone. In this paper, we address the specific challenges of unbounded problems when using time-domain explicit finite elements: 1. The algorithm must be spatially local, to minimize storage and communication cost, 2. It must contain second-order time derivatives for compatibility with the explicit central-difference time integration scheme, 3. Its coefficient for the second-order derivatives must be diagonal (“lumped mass
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Liu, J., S. J. Zhang, and Y. S. Chen. "Predictions of Radiative Properties of Patterned Silicon Wafers by Solving Maxwell’s Equations in the Time Domain." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47424.

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A rigorous electromagnetic model is developed to predict the radiative properties of patterned silicon wafers. For nonplanar structures with characteristic length close to the wavelength of incident radiation, Maxwell’s equations must be used to describe the associated radiative interaction and they are solved by the finite difference time-domain (FDTD) method. In the die area, only one period of the structure is modeled due to its periodicity in geometry. To truncate a computational domain, both the Mur condition and perfectly matched layer (PML) technique are available to absorb outgoing wav
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Dey, Saikat, and Joseph J. Shirron. "Computation of Acoustic Transmission Loss Through Doubly-Periodic 3D Elastic Panels." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13713.

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We address acoustic transmission loss through doubly-periodic elastic panels separating two semi-infinite fluid half-spaces. This involves the computation of the transmitted and reflected sound fields due to an incident plane wave. The elastic panel may have complex internal structures, for example, a sandwiched honeycomb core. Our computations are based on using high order (p-version) finite element discretization. The semi-infinite fluid half-spaces on either side of the elastic panel are truncated using perfectly matched layer (PML) approximations. We verify our model using data for transmi
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Reports on the topic "Perfectly Matched Layers (PML)"

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Banks, H. T., and Brian L. Browning. Time Domain Electromagnetic Scattering Using Finite Elements and Perfectly Matched Layers. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada451435.

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Michler, C., L. Demkowicz, J. Kurtz, and D. Pardo. Improving the Performance of Perfectly Matched Layers by Means of hp-Adaptivity. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada457406.

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Elson, J. M. Three Dimensional Finite-Difference Time- Domain Solution of Maxwell's Equations With Perfectly Matched Absorbing Layers. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada369016.

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