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<metadatalist>
	<metadata ReferenceType="Thesis">
		<site>mtc-m16b.sid.inpe.br 802</site>
		<holdercode>{isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}</holdercode>
		<identifier>6qtX3pFwXQZGivnK2Y/TcJzC</identifier>
		<repository>sid.inpe.br/mtc-m17@80/2008/02.18.20.02</repository>
		<lastupdate>2022:08.23.10.19.00 cptec.inpe.br/walmeida/2003/04.25.17.12 sergio</lastupdate>
		<metadatarepository>sid.inpe.br/mtc-m17@80/2008/02.18.20.02.38</metadatarepository>
		<metadatalastupdate>2022:08.23.10.20.39 cptec.inpe.br/walmeida/2003/04.25.17.12 sergio {D 2008}</metadatalastupdate>
		<secondarykey>INPE-15237-TDI/1324</secondarykey>
		<citationkey>Marques:2008:AbMeSi</citationkey>
		<title>O método Particle-In-Diffuse-Cell: uma abordagem meshfree para simulação de plasmas</title>
		<alternatetitle>The Particle-In-Diffuse-Cell method: a meshfree approach for plasmas simulation</alternatetitle>
		<course>CAP-SPG-INPE-MCT-BR</course>
		<year>2008</year>
		<secondarydate>20080526</secondarydate>
		<date>2008-02-29</date>
		<thesistype>Tese (Doutorado em Computação Aplicada)</thesistype>
		<secondarytype>TDI</secondarytype>
		<numberofpages>175</numberofpages>
		<numberoffiles>538</numberoffiles>
		<size>24008 KiB</size>
		<author>Marques, Gleber Nelson,</author>
		<group>CAP-SPG-INPE-MCT-BR</group>
		<committee>Becceneri, José Carlos (presidente),</committee>
		<committee>Pássaro, Angelo (orientador),</committee>
		<committee>Stephany, Stephan (co-orientador),</committee>
		<committee>Ramos, Fernando Manuel,</committee>
		<committee>Campos Velho, Haroldo Fraga de,</committee>
		<committee>Scheid, Vladimir Henrique Baggio,</committee>
		<e-mailaddress>viveca@sid.inpe.br</e-mailaddress>
		<university>Instituto Nacional de Pesquisas Espaciais (INPE)</university>
		<city>São José dos Campos</city>
		<transferableflag>1</transferableflag>
		<keywords>Particle in cell technique, element free Galerkin method, plasma dynamics, meshfree method, magnetohydrodynamic simulation.</keywords>
		<abstract>Esta tese descreve uma formulação meshfree inédita para simulação de plasmas via modelo de partículas fundamentada no modelo Particle-In-Cell (PIC) e no método Element-Free Galerkin (MEFG). A partir da revisão do conceito de elemento difuso, precursor do MEFG, chegou-se à concepção da célula difusa, dando origem à formulação denominada Particle-In-Diffuse-Cell (PIDC). Modelos PIC eletrostáticos e o MEFG são revisados para subsidiar a apresentação da formulação do método PIDC, bem como a paralelização de programas PIC e modelos colisionais. Além da característica de fácil adaptatividade dos métodos meshfree, a robustez no cálculo do campo elétrico também é um requisisto bastante desejável em modelos PIC. A abordagem interpolante do MEFG combinada com a técnica de truncamento de domínios, empregada no modelo computacional do PIDC, foi rigorosamente avaliada quanto a acurácia no cálculo de campos elétricos contínuos e descontínuos. O grande potencial de aplicação do PIDC inclui simulações de plasmas envolvendo geometrias complexas bi ou tridimensionais e / ou a necessidade de sucessivos refinamentos de malha, constituindo-se assim, nestes cenários, uma nova e promissora alternativa numérica aos métodos PIC baseados em malha. ABSTRACT: This thesis describes an original meshfree formulation for plasmas simulation based on the Particle-In-Cell (PIC) particle model and the Element-Free Galerkin method (EFGM). Recalling the diffuse element concept introduced before the EFGM proposition, we realize the diffuse cell concept, which allowed the development of the Particle-In-Diffuse-Cell (PIDC) formulation. Electrostatic PIC models and the EFGM were revised, as well as the parallelization of PIC codes and collisional models. Despite the ability of easy adaptivity of the meshfree methods, also its robustness for computing the electric field is a very desired feature for PIC models. An interpolating EFGM with the domain truncation technique was rigorously evaluated for the computation of continuous and discontinuous electric fields. PIDC potential applications include complex bi or tri-dimensional geometries, and / or the requirement of frequent mesh refinement, in these scenarios, the PIDC formulation can be seen as a promising new numerical alternative instead of PIC mesh-based methods.</abstract>
		<area>COMP</area>
		<language>pt</language>
		<targetfile>publicacao.pdf</targetfile>
		<usergroup>administrator</usergroup>
		<usergroup>gleber.nmarques@gmail.com</usergroup>
		<usergroup>jefferson</usergroup>
		<usergroup>sergio</usergroup>
		<usergroup>yolanda.souza@mcti.gov.br</usergroup>
		<visibility>shown</visibility>
		<copyright>urlib.net/www/2012/11.12.15.10</copyright>
		<copyholder>SID/SCD</copyholder>
		<readpermission>allow from all</readpermission>
		<documentstage>not transferred</documentstage>
		<nexthigherunit>8JMKD3MGPCW/3F2PHGS</nexthigherunit>
		<dissemination>NTRSNASA; BNDEPOSITOLEGAL.</dissemination>
		<hostcollection>cptec.inpe.br/walmeida/2003/04.25.17.12</hostcollection>
		<username>sergio</username>
		<agreement>{TERMO DE DEPOSITO ASSINADO GLEBER NELSON MARQUES doutorado computação.pdf} .htaccess .htaccess2</agreement>
		<lasthostcollection>cptec.inpe.br/walmeida/2003/04.25.17.12</lasthostcollection>
		<supervisor>Pássaro, Angelo,</supervisor>
		<supervisor>Stephany, Stephan,</supervisor>
		<url>http://mtc-m16b.sid.inpe.br/rep-/sid.inpe.br/mtc-m17@80/2008/02.18.20.02</url>
	</metadata>
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