<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5944</journal-id>
<journal-title><![CDATA[Ingeniería Mecánica]]></journal-title>
<abbrev-journal-title><![CDATA[Ingeniería Mecánica]]></abbrev-journal-title>
<issn>1815-5944</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería Mecánica. Instituto Superior Politécnico "José Antonio Echeverría"]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59442018000200108</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Algoritmo para determinar cavitación en un par eje-cojinete con ranura axial y desalineación paralela]]></article-title>
<article-title xml:lang="en"><![CDATA[An algorithm to determine cavitation in a journal bearing with axial groove and parallel misalignment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lombera-Rodríguez]]></surname>
<given-names><![CDATA[Hassán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Novo-Soto]]></surname>
<given-names><![CDATA[Carlos Eulalio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de las Ciencias Informáticas  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>21</volume>
<numero>2</numero>
<fpage>108</fpage>
<lpage>116</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59442018000200108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59442018000200108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59442018000200108&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del trabajo fue proporcionar un algoritmo computacional para predecirla ocurrencia de la cavitaciónen el lubricante de un par eje-cojinete,sometido a un desplazamiento radial conocido.El dispositivo se compone de un cilindro exterior que rodea un eje, ambos separados por un lubricante que evita el contacto. Se considera una ranura de alimentación axial y una desalineación paralela. Las incógnitas del problema son el campo de presión del lubricante, que satisface el modelo de cavitación de Reynolds, y la fuerza ejercida por este. El problema se resuelve computacionalmente mediante un método de gradiente conjugado precondicionado, modificado con técnicas de proyección y reinicialización para afrontar la cavitación. La estrategia numérica adoptada explota las propiedades del modelo matemático subyacente y aporta otra forma de solución al problema en cuestión, diferente de las que existen en la literatura.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of this paper is to provide a computational algorithm to predictcavitation within the lubricant of a journal bearing subjected to parallel misalignment. The device consists of an external cylinder surrounding a rotating shaft, both separated by a lubricant to prevent contact. An axial supply groove is considered as well as a parallel misalignment. The unknowns of the problem are the lubricant pressure field, satisfying the Reynolds cavitation model, and the force exerted by this. The problem is solved by the preconditioned conjugate gradient method, modified with both projection and restarting strategies to account for cavitation. The numerical approach takes advantage of the underlying mathematical model and provides another way of solution to the related problem, different from the ones that exist in the literature.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cavitación]]></kwd>
<kwd lng="es"><![CDATA[desalineación paralela]]></kwd>
<kwd lng="es"><![CDATA[gradiente conjugado precondicionado]]></kwd>
<kwd lng="es"><![CDATA[par eje-cojinete]]></kwd>
<kwd lng="en"><![CDATA[cavitation]]></kwd>
<kwd lng="en"><![CDATA[parallel misalignment]]></kwd>
<kwd lng="en"><![CDATA[preconditioned conjugate gradient method]]></kwd>
<kwd lng="en"><![CDATA[journal bearing]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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