Sharif University of Technology Scientia Iranica 1026-3098 16 2 2009 04 01 Direct Design of Branched Ducts 3008 EN A. Ashrafizadeh Department of Mechanical Engineering,Khajeh Nasire Toosi University of Technology M. Taiebi-Rahni Department of Aerospace Engineering,Sharif University of Technology F. Ghadak Department of Aerospace Engineering,I.P.M. Journal Article 2009 06 06 Abstract. A fully coupled formulation of thermo- uid shape design problems has recently been developed in which the unknown nodal coordinates appear explicitly in the formulation of the problem. This direct design" approach is, in principle, generally applicable and has been successfully applied in the context of potential and Euler ow models.This paper focuses on the direct design of ducts using the ideal ow model and may be considered as an addendum to the paper entitled Direct Design of Ducts" [1]. However, a cell-vertex nite volume method is used and a dierent boundary condition implementation technique is applied, as compared to the method presented in the previous paper. The other new feature is that a non-linear algebraic method is used for grid generation. The method is also proved to be capable of designing complex ow passages, such as branched ducts. https://scientiairanica.sharif.edu/article_3008_c02f9de3c2f3040751818aacc7f60b74.pdf