Toward improved rotor-only axial fans-Part II: Design optimization for maximum efficiency

D. N. Sϕrensen, M. C. Thompson, J. N. Sϕrensen

Research output: Contribution to journalArticleResearchpeer-review

17 Citations (Scopus)


Numerical design optimization of the aerodynamic performance of axial fans is carried out, maximizing the efficiency in a design interval of flow rates. Tip radius, number of blades, and angular velocity of the rotor are fixed, whereas the hub radius and spanwise distributions of chord length, stagger angle, and camber angle are varied to find the optimum rotor geometry. Constraints ensure a pressure rise above a specified target and an angle of attack on the blades below stall. The optimization scheme is used to investigate the dependence of maximum efficiency on the width of the design interval and on the hub radius.

Original languageEnglish
Pages (from-to)324-329
Number of pages6
JournalJournal of Fluids Engineering
Issue number2
Publication statusPublished - 1 Jan 2000

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