<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222020000200262</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2020-02-07</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelo de simulación para el drenaje agrícola subterráneo]]></article-title>
<article-title xml:lang="en"><![CDATA[Simulation model for subsurface agricultural drainage]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zavala]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saucedo]]></surname>
<given-names><![CDATA[Heber]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Zacatecas  ]]></institution>
<addr-line><![CDATA[Zacatecas Zacatecas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Comisión Nacional de Agua  ]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Mexicano de Tecnología del Agua  ]]></institution>
<addr-line><![CDATA[Jiutepec Morelos]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>2</numero>
<fpage>262</fpage>
<lpage>290</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222020000200262&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222020000200262&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222020000200262&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este trabajo se presenta la segunda versión del programa de cómputo DRENAS (drenaje agrícola subterráneo), el cual incluye tres soluciones analíticas y una solución de elemento finito tipo Galerkin de la ecuación diferencial del drenaje agrícola en su forma unidimensional; puede ejecutarse bajo sistemas operativos Windows de 32 bits y 64 bits. Los modelos analíticos y numéricos incluidos en la versión 1.0 del programa se reprogramaron en Visual Basic 2017, realizando modificaciones para mejorar sus capacidades de cálculo, registro de datos y visualización de resultados. El modelo numérico se amplió para resolver la ecuación de Boussinesq no lineal con coeficientes variables, incluyendo el término de recarga vertical, y para manejar las opciones de usar en la frontera de los drenes condiciones tipo Dirichlet, radiación lineal o radiación fractal. Los resultados proporcionados por el módulo de la solución numérica del programa fueron validados satisfactoriamente haciendo uso de una solución analítica y un experimento de drenaje.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The second version of the computer program DRENAS (subsurface agricultural drainage) is presented, which includes four analytical solutions and a finite element solution Galerkin type of the differential equation of agricultural drainage in its one-dimensional form and can be run under Windows systems of 32-bit or 64-bit. The analytical and numerical models included in version 1.0 of the program were migrated from Visual Basic 2005 to Visual Basic 2017 and modified to expand and improve their calculation, data recording and results visualization capabilities. The numerical model can now solve the non-linear Boussinesq equation with variable coefficients including the vertical recharge term and allows use at the boundary of the drains, Dirichlet condition, linear radiation or fractal radiation. The results provided by the module of the numerical solution of the program were validated using an analytical solution and a drainage test.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ecuación de Boussinesq]]></kwd>
<kwd lng="es"><![CDATA[coeficiente de almacenamiento variable]]></kwd>
<kwd lng="es"><![CDATA[condición de radiación fractal]]></kwd>
<kwd lng="es"><![CDATA[propiedades hidráulicas del suelo]]></kwd>
<kwd lng="en"><![CDATA[Boussinesq equation]]></kwd>
<kwd lng="en"><![CDATA[variable storage coefficient]]></kwd>
<kwd lng="en"><![CDATA[fractal radiation condition]]></kwd>
<kwd lng="en"><![CDATA[soil hydraulic properties]]></kwd>
</kwd-group>
</article-meta>
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