http://www.colloquiam.com/wd/index.php?action=history&feed=atom&title=Lorente_Macias_2025a 2026-05-15T10:38:37Z Revision history for this page on the wiki MediaWiki 1.27.0-wmf.10 http://www.colloquiam.com/wd/index.php?title=Lorente_Macias_2025a&diff=316797&oldid=prev 2025-03-04T11:38:28Z

<p>JLM4 moved page <a href="/public/Draft_Lorente_Macias_177972868" class="mw-redirect" title="Draft Lorente Macias 177972868">Draft Lorente Macias 177972868</a> to <a href="/public/Lorente_Macias_2025a" title="Lorente Macias 2025a">Lorente Macias 2025a</a></p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style='vertical-align: top;' lang='en'> <td colspan='1' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='1' style="background-color: white; color:black; text-align: center;">Revision as of 11:38, 4 March 2025</td> </tr><tr><td colspan='2' style='text-align: center;' lang='en'><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

JLM4 http://www.colloquiam.com/wd/index.php?title=Lorente_Macias_2025a&diff=316796&oldid=prev 2025-03-04T11:38:25Z

<p>Created page with &quot; == Abstract == &lt;p&gt; In this study, we find the optimal control boundary (i.e., actuator velocity) that cancels the acoustic reverberations inside drop-on-demand inkjet p...&quot;</p> <p><b>New page</b></p><div><br /> == Abstract ==<br /> <br /> &lt;p&gt;&amp;nbsp;In this study, we find the optimal control boundary (i.e., actuator velocity) that cancels the acoustic reverberations inside drop-on-demand inkjet printheads at a specific time. We formulate an optimiza tion problem to minimize the total energy of the oscillating flow at a given time (i.e., the acoustic energy inside the microchannel and the surface energy of the droplet). We use the adjoint method to compute the gradient of the cost function with respect to the control boundary, and a gradient-based optimization algorithm to converge to the optimal solution. This methodology has been successfully applied to two generic inkjet printhead mechanisms: thin-film and bulk types. In both cases, the actu ator first reduces the surface energy of the system by extracting fluid from the nozzle. In this process, acoustic waves also propagate through the channel and reverberate at the ends, which increases the acoustic energy of the system. The actuator then sends additional acoustic waves that cancel these reverberations. Both mechanisms have been able to reduce the total energy of the system by a factor of over 100 in comparison with the uncontrolled cases.&lt;/p&gt;<br /> <br /> <br /> <br /> == Document ==<br /> &lt;pdf&gt;Media:Draft_Lorente Macias_177972868-4435-document.pdf&lt;/pdf&gt;</div>

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