Telecommunications towers and other structures composed of steel sections are particularly susceptible to the action of wind loads that need to be quantified for a correct design of these sections. In the obtaining of wind loads, the determination of the drag (C D ) and lift (C L ) coefficients of the elements that compose the lattice, is vitally important because, from these coefficients, the separation and the permeability of the lattice is estimated the acting wind load. This paper studies the influence of the blockage ratio on the C D and C L coefficients in an equal-leg angle section, widely used in this kind of structure. To obtain these coefficients, computational fluid dynamics (CFD) was used through OpenFOAM software. As part of the experiment, three blockage ratios were simulated: 5 %, 10 % and 20%, using as a comparison pattern the C D and C L values provided by the NBR 6123 1988, NC 285 2003, NBCC 2005 and ASCE 7-10 2010 standards ADDIN CSL_CITATION { "citationItems" : [ { "id" : "ITEM-1", "itemData" : { "author" : [ { "dropping-particle" : "", "family" : "NBR 6123", "given" : "", "non-dropping-particle" : "", "parse-names" : false, "suffix" : "" } ], "id" : "ITEM-1", "issued" : { "date-parts" : [ [ "1988" ] ] }, "number" : "6123", "page" : "66", "title" : "For\u00e7as devidas ao vento em edifica\u00e7\u00f5es. Associa\u00e7\u00e3o Brasileira de Normas T\u00e9cnicas", "type" : "legislation" }, "uris" : [ "http://unknownServer/documents/?uuid=a12eab71-973b-4173-81d4-73de399606df" ] }, { "id" : "ITEM-2", "itemData" : { "author" : [ { "dropping-particle" : "", "family" : "NC285", "given" : "", "non-dropping-particle" : "", "parse-names" : false, "suffix" : "" } ], "id" : "ITEM-2", "issued" : { "date-parts" : [ [ "2003" ] ] }, "number" : "285", "page" : "70", "title" : "Carga de Viento. M\u00e9todo de c\u00e1lculo. Ofici...

Determinación de los coeficientes de arrastre y sustentación en un perfil angular de alas iguales con el empleo de simulación numérica

10.14482/inde.38.1.511.8