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A novel 2D incompressible viscous inverse design method for internal flows using flexible string algorithm / Mahdi Nili-Ahmadabadi in Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 3 (Mars 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 3 (Mars 2010) . - 10 p. Titre : A novel 2D incompressible viscous inverse design method for internal flows using flexible string algorithm Type de document : texte imprimé Auteurs : Mahdi Nili-Ahmadabadi, Auteur ; Ali Hajilouy-Benisi, Auteur ; Farhad Ghadak, Auteur Année de publication : 2010 Article en page(s) : 10 p. Note générale : fluids engineering Langues : Anglais (eng) Mots-clés : pressure;  flow  (dynamics);  separation  (technology);  string;  diffusers;  internal  flow;  algorithms;  design;  design  methodology;  ducts;  equations;  shapes Résumé : In this investigation, the flexible string algorithm (FSA ), used before for inverse design of subsonic and supersonic ducts in compressible flows with and without normal shock, is developed and applied for inverse design of 2D incompressible viscous internal flow with and without separation. In the proposed method, the duct wall shape is changed under an algorithm based on deformation of a virtual flexible string in flow. At each modification step, the difference between current and target wall pressure distributions is applied to the string. The method is an iterative inverse design method and utilizes the analysis code for the flow field solution as a black-box. Some validation test cases and design examples are presented here, which show the robustness and flexibility of the method in handling complex geometries. In cases with separated flow pressure distribution, a unique solution for inverse design problem does not exist. The design algorithm is a physical and quick converging approach and can efficiently utilize commercial flow analysis software. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27411 [...] [article] A novel 2D incompressible viscous inverse design method for internal flows using flexible string algorithm [texte imprimé] / Mahdi Nili-Ahmadabadi, Auteur ; Ali Hajilouy-Benisi, Auteur ; Farhad Ghadak, Auteur . - 2010 . - 10 p. fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 3 (Mars 2010) . - 10 p. Mots-clés : pressure;  flow  (dynamics);  separation  (technology);  string;  diffusers;  internal  flow;  algorithms;  design;  design  methodology;  ducts;  equations;  shapes Résumé : In this investigation, the flexible string algorithm (FSA ), used before for inverse design of subsonic and supersonic ducts in compressible flows with and without normal shock, is developed and applied for inverse design of 2D incompressible viscous internal flow with and without separation. In the proposed method, the duct wall shape is changed under an algorithm based on deformation of a virtual flexible string in flow. At each modification step, the difference between current and target wall pressure distributions is applied to the string. The method is an iterative inverse design method and utilizes the analysis code for the flow field solution as a black-box. Some validation test cases and design examples are presented here, which show the robustness and flexibility of the method in handling complex geometries. In cases with separated flow pressure distribution, a unique solution for inverse design problem does not exist. The design algorithm is a physical and quick converging approach and can efficiently utilize commercial flow analysis software. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27411 [...]