Scaling techniques using CFD and wind tunnel measurements for use in aircraft design
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
This thesis deals with the problems of scaling aerodynamic data from wind tunnel conditions to free flight. The main challenges when this scaling should be performed is how the model support, wall interference and the potentially lower Reynolds number in the wind tunnel should be corrected.
Computational Fluid Dynamics (CFD) simulations have been performed on a modern transonic transport aircraft in order to reveal Reynolds number effects and how these should be scaled accurately. This investigation also examined how the European Transonic Wind tunnel (ETW) twin sting model support influences the flow over the aircraft. In order to further examine Reynolds number effects a MATLAB based code capable of extracting local boundary layer properties from structured and unstructured CFD calculations have been developed and validated against wind tunnel measurements. A general scaling methodology is presented.
Place, publisher, year, edition, pages
Stockholm: KTH , 2006. , xii, 17 p.
Trita-AVE, ISSN 1651-7660 ; 2006:64
CFD, wind tunnel, scaling, Reynolds number effect
IdentifiersURN: urn:nbn:se:kth:diva-4122OAI: oai:DiVA.org:kth-4122DiVA: diva2:10823
2006-10-13, S40, Teknikringen 8, Stockholm, 10:00
Alfredsson, Henrik, professor
QC 201011232006-10-032006-10-032010-11-23Bibliographically approved
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