Documents disponibles écrits par cet auteur

Shape optimization of symmetric cylinder shape on buoyancy using Fourier series approximation / Hyeongkeun Kim in Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 5 (Mai 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 5 (Mai 2010) . - 08 p. Titre : Shape optimization of symmetric cylinder shape on buoyancy using Fourier series approximation Type de document : texte imprimé Auteurs : Hyeongkeun Kim, Auteur ; Dongmin Choi, Auteur ; Youngjin Kim, Auteur Année de publication : 2010 Article en page(s) : 08 p. Note générale : fluids engineering Langues : Anglais (eng) Mots-clés : force;  buoyancy;  modeling;  optimization;  approximation;  cylinders;  Fourier  series;  rods;  shapes;  water Résumé : The hydrophobicity of water striders and fisher spiders shows the geometrical property of microsetae with elaborate nanogrooves. Studying such geometrical morphology naturally leads to the question: what is an optimal shape for buoyancy? In this paper, we present a methodology to find suboptimal shapes for star-shaped cross-sectional rods, which maximizes the buoyant force by modeling the cross-sectional shapes with Fourier series representation in the polar coordinate. We provide four suboptimal cross-sectional shapes and their experimental results. Our results support the importance of the geometrical shape for buoyant force and might be helpful in designing water repelling devices. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27418 [...] [article] Shape optimization of symmetric cylinder shape on buoyancy using Fourier series approximation [texte imprimé] / Hyeongkeun Kim, Auteur ; Dongmin Choi, Auteur ; Youngjin Kim, Auteur . - 2010 . - 08 p. fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 5 (Mai 2010) . - 08 p. Mots-clés : force;  buoyancy;  modeling;  optimization;  approximation;  cylinders;  Fourier  series;  rods;  shapes;  water Résumé : The hydrophobicity of water striders and fisher spiders shows the geometrical property of microsetae with elaborate nanogrooves. Studying such geometrical morphology naturally leads to the question: what is an optimal shape for buoyancy? In this paper, we present a methodology to find suboptimal shapes for star-shaped cross-sectional rods, which maximizes the buoyant force by modeling the cross-sectional shapes with Fourier series representation in the polar coordinate. We provide four suboptimal cross-sectional shapes and their experimental results. Our results support the importance of the geometrical shape for buoyant force and might be helpful in designing water repelling devices. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27418 [...]