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CFD investigation of a fin keel.
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This thesis aims to help sailboat owners to decide a preferable NACA profile. A CFD comparison in terms of drag and lift coefficients between two NACA profiles have been applied on a typical fin keel. Each profile has been computed with different angles of attack to investigate the impact of small direction changes. ANSYS Fluent 13.0 is used to model the flow according to RANS k-epsilon model. The conclusion is that NACA65 series gives lower drag while NACA64 series gives higher lift.

Abstract [sv]

Syftet med det här examensarbetet är att undersöka skillnaderna för olika NACA-kölprofiler med avseende på tryckkoefficienter Arbetet strävar även efter att ge båtägare en tydligare bild av en fördelaktig NACA-profil. Varje kölprofil har beräknats med olika anfallsvinklar för att undersöka effekten av små vinkeländringar. ANSYS Fluent 13.0 har använts för att modellera flödet enligt k-epsilon-modellen. Slutsatsen är NACA65-serien ger en lägre motståndskoefficient medan NACA64-serien ger en högre lyftkoefficient.

Place, publisher, year, edition, pages
2014. , 45 p.
Keyword [en]
Sailboat, keel, CFD, RANS, turbulence, NACA profile
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-148816OAI: diva2:737567
Available from: 2014-08-13 Created: 2014-08-13 Last updated: 2014-08-13Bibliographically approved

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Jakob Heide o Patrik Lans kandidatexamensarbete. Bachelor of Science Thesis. Department of Mechanics. KTH.(1863 kB)1003 downloads
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