<?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>0124-8170</journal-id>
<journal-title><![CDATA[Ciencia e Ingeniería Neogranadina]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. Ing. Neogranad.]]></abbrev-journal-title>
<issn>0124-8170</issn>
<publisher>
<publisher-name><![CDATA[Universidad Militar Nueva Granada]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0124-81702018000200105</article-id>
<article-id pub-id-type="doi">10.18359/rcin.2904</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[CUANTIFICACION DEL EFECTO DE OBSTRUCCIONES EN EL ÁREA TRANSVERSAL DE UN TÚNEL DE VIENTO SOBRE LOS RESULTADOS DE LA CALIBRACIÓN DE ANEMÓMETROS]]></article-title>
<article-title xml:lang="en"><![CDATA[QUANTIFICATION OF OBSTRUCTIONS' EFFECT IN THE TRANSVERSAL AREA OF A WIND TUNNEL ON THE CALIBRATION RESULTS OF ANEMOMETERSS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Madolet Pinto]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Granados Avellaneda]]></surname>
<given-names><![CDATA[Edison Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Sánchez]]></surname>
<given-names><![CDATA[Carlos Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Desarrollo Tecnológico del Gas (CDT de Gas)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<fpage>105</fpage>
<lpage>120</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0124-81702018000200105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0124-81702018000200105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0124-81702018000200105&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los instrumentos utilizados para cuantificar magnitudes físicas requieren de calibraciones periódicas para garantizar la fiabilidad y precisión de sus mediciones. Uno de los métodos de calibración de anemómetros más utilizado consiste en la comparación directa de las lecturas obtenidas por el anemómetro que se desea calibrar y por un instrumento patrón, al exponer ambos instrumentos a un gas a la misma velocidad en el interior de un túnel de viento. Sin embargo, la presencia del anemómetro que está siendo calibrado genera una obstrucción que puede distorsionar el perfil de velocidad al interior del túnel de viento; por esta razón, la presente investigación tuvo como objetivo estudiar y modelar el efecto de las obstrucciones causadas por los anemómetros bajo prueba sobre los perfiles de velocidad al interior del túnel de viento WSL20, de la Corporación Centro de Desarrollo Tecnológico de Gas, y así evaluar su influencia sobre los procesos de calibración de instrumentos. Los resultados muestran que el tubo de Pitot tipo L no causa una distorsión significativa en el perfil de velocidad, mientras que anemómetros rotativos de diferentes dimensiones ocasionan incrementos en la velocidad registrada por el patrón que varían entre 2,5 % y 5,6 %. Se evidencia la importancia de considerar el efecto de las obstrucciones al interior del túnel de viento y de cuantificar el sesgo que ocasionan, para evitar que este hecho se convierta en un error sistemático dentro del proceso de calibración.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The instruments used to calculate physical quantities require periodic calibrations to ensure the reliability and accuracy of their measurements. One of the most widely used anemometer calibration methods is to directly compare the readings obtained by the anemometer to be calibrated and a standard instrument by exposing both to a gas at the same speed within a wind tunnel. However, the presence of the anemometer being calibrated creates an obstruction that can distort the velocity profile inside the wind tunnel. Therefore, the objective of this research was to study and model the effect of obstructions caused by anemometers being tested on velocity profiles inside wind tunnel WSL 20 of the Corporación Centro de Desarrollo Tecnológico de Gas and, thus, evaluate their influence on instrument calibration. The results show that type L Pitot tubes do not cause a significant distortion of the velocity profile, whereas vane anemometers of different dimensions increase the speed recorded by the standard tool, which varied between 2.5 and 5.6 %. Considering the effect of obstructions inside the wind tunnel and quantifying the bias caused by them is relevant to avoid a systematic error in the calibration process.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[calibración de anemómetros]]></kwd>
<kwd lng="es"><![CDATA[medidores de velocidad de gases]]></kwd>
<kwd lng="es"><![CDATA[perfil de velocidad]]></kwd>
<kwd lng="es"><![CDATA[túnel de viento]]></kwd>
<kwd lng="en"><![CDATA[anemometer calibration]]></kwd>
<kwd lng="en"><![CDATA[gas velocity meters]]></kwd>
<kwd lng="en"><![CDATA[velocity profile]]></kwd>
<kwd lng="en"><![CDATA[wind tunnel]]></kwd>
</kwd-group>
</article-meta>
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