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Compact CFD Modeling of EMC screen for radio base stations: a porous media approach and a correlation for the directional loss coefficients
TECNUN, University of Navarra, Navarra, Spain.ORCID-id: 0000-0003-1329-5891
Royal Institute of Technology (KTH), Stockholm, Sweden.
Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för energi- och maskinteknik. Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping.ORCID-id: 0000-0003-3472-4210
2007 (engelsk)Inngår i: IEEE transactions on components and packaging technologies (Print), ISSN 1521-3331, E-ISSN 1557-9972, Vol. 30, nr 4, s. 875-885Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A methodology to obtain the directional pressure loss coefficients in a porous media model of an electromagnetically compatible screen of a radio base station model is presented. The directional loss coefficients of this compact model are validated against a detailed computational fluid dynamics model not only by comparing the total pressure drop, but also by evaluating the flow pattern after the screen. The detailed model was validated in an earlier article by the authors. A parametric study is conducted for 174 cases. Seven parameters were investigated: velocity, inlet height, screen porosity, printed circuit board (PCB) thickness, inlet-screen gap, distance between two PCBs and screen thickness. Based on the compact model parametric study, two correlations for the directional loss coefficients are developed as a function of the Reynolds number and the above geometrical parameters. The average disagreement between the compact model that uses the directional loss coefficients from the correlations and the detailed model was of 3% for the prediction of the total pressure drop and less than 6.5% and 9.5% for two coefficients that accurately characterize the flow pattern.

sted, utgiver, år, opplag, sider
2007. Vol. 30, nr 4, s. 875-885
Emneord [en]
directional loss coefficients, electromagnetic compatibility (EMC) screen, flow pattern, flow uniformity, porous media, pressure drop, renormalization group (RNG)
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-22657DOI: 10.1109/TCAPT.2007.910065ISI: 000251431100042Scopus ID: 2-s2.0-36949028784OAI: oai:DiVA.org:hig-22657DiVA, id: diva2:1040199
Tilgjengelig fra: 2016-10-26 Laget: 2016-10-26 Sist oppdatert: 2018-03-13bibliografisk kontrollert

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