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<font face="Calibri, serif"><font style="font-size:18pt" size="5"><b>Seminários Multidisciplinares de Física Aplicada</b></font></font></p>
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<font face="Calibri, serif"><font style="font-size:14pt" size="4"><b>DATA: </b></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><i><u><b>quinta-feira</b></u></i></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><b>,
</b></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><span style="font-weight:normal">dia
</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><span style="font-weight:normal">5</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><span style="font-weight:normal">
de </span></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><span style="font-weight:normal">maio</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><span style="font-weight:normal">
de 2022</span></span></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><span><b>HORA:
</b></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><u><span style="font-weight:normal">1</span></u></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><u><span style="font-weight:normal">5</span></u></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span><u><span style="font-weight:normal">:00h</span></u></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:14pt" size="4"><span lang="pt-BR"><span><span><b>PA</b></span></span></span></font></font><font face="Calibri, serif"><font style="font-size:14pt" size="4"><span lang="pt-BR"><span><span><b>LESTRANTE:
</b></span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal">P</span></span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span><span><span style="font-weight:normal">rof.
D</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span><span><span style="font-weight:normal">r.
</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span><span><span style="font-weight:normal">Luca Moriconi</span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal">
(</span></span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal">IF – UFRJ</span></span></span></span></font></font><font face="Calibri, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal">)</span></span></span></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:13pt" size="3"><b>TITULAÇÃO E FILIAÇÃO INSTITUCIONAL:
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<font face="Calibri, sans-serif"><font style="font-size:13pt" size="3"><span><span><span style="font-weight:normal">D</span></span></span><span><span><span style="font-weight:normal">outor em
</span></span></span><span><span><span style="font-weight:normal">Física</span></span></span><span><span><span style="font-weight:normal"> (</span></span></span><span><span><span style="font-weight:normal">PUC</span></span></span><span><span><span style="font-weight:normal">–</span></span></span><span><span><span style="font-weight:normal">Rio</span></span></span><span><span><span style="font-weight:normal">)</span></span></span><span><span><span style="font-weight:normal">;</span></span></span></font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:13pt" size="3"><span lang="pt-BR"><span><span><span style="font-weight:normal">P</span></span></span></span></font></font><font face="Calibri, sans-serif"><font style="font-size:13pt" size="3"><span lang="pt-BR"><span><span><span style="font-weight:normal">ós-doutorado
em Física (Universidade de Princeton)</span></span></span></span></font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:13pt" size="3"><span lang="pt-BR"><span><span><span style="font-weight:normal">Professor Associado do Instituto de Física da UFRJ</span></span></span></span></font></font><font face="Calibri, sans-serif"><font style="font-size:13pt" size="3"><span lang="pt-BR"><span><span><span style="font-weight:normal">.</span></span></span></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:14pt" size="4"><span lang="pt-BR"><span><span><b>TÍTULO:
</b></span></span></span></font></font><font face="Times New Roman, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal">Top-Down Modeling of Limescale Formation in Turbulent Pipe Flows</span></span></span></span></font></font><font face="Times New Roman, serif"><font style="font-size:15pt" size="4"><span lang="pt-BR"><span><span><span style="font-weight:normal"></span></span></span></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:14pt" size="4"><b>RESUMO:</b></font></font></p>
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<font face="Times New Roman, serif"><font style="font-size:11pt" size="2">We discuss in this talk calcium carbonate scale formation in high Reynolds number flows as investigated at the NIDF/UFRJ large pipe rig facility. Limescale clogging is a crucial problem
that affects the production of oil from carbonate reservoirs (as in the pre-salt layer). In our experiments, the calcium carbonate solution is produced from the injection, at a T-joint inlet, of pH-stabilized sodium carbonate and calcium chloride aqueous solutions.
A scanning electron microscopy analysis of the deposited mass along the pipe indicates that after an initial transient regime of ion-by-ion crystal growth, calcium carbonate scale is dominated by particulate deposition. While limescale formation in regions
that are closer to the pipe's entrance can be described as the heterogeneous surface nucleation of calcium and carbonate ions driven by turbulent diffusion, we rely upon turbophoresis phenomenology to devise a peculiarly simple kinetic model of deposition
at farther downstream regions. Letting and R be the Φ flow rate and the pipe's radius, respectively, the mass deposition rates per unit time and unit area are predicted to scale as Φ<sup>α</sup> / R<sup>β</sup> for modeled values of α and β, with suggestive
support from experimental data.</font></font></p>
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<font face="Calibri, serif"><font style="font-size:9pt" size="2"><span><span><b><br>
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<font face="Calibri, serif"><font style="font-size:9pt" size="2"><span><span><b>AVISO:</b></span></span></font></font></p>
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<font face="Calibri, serif"><font style="font-size:9pt" size="2">Palestrantes convidados têm total independência em seus comentários. Suas opiniões não refletem, necessariamente, a posição ou visão do Programa de Pós-graduação Multidisciplinar em Física Aplicada
ou do Instituto de Física da UFRJ.</font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:14pt" size="4"><b>Seminário
<font style="font-size:16pt" size="4">PRESENCIAL</font></b></font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:14pt" size="4">Auditório do LADIF (sala 418)</font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:14pt" size="4">Saudações,</font></font></p>
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<font face="Calibri, sans-serif"><font style="font-size:14pt" size="4">Marcelo Byrro Ribeiro</font></font></p>
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