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- W34592630 abstract "The present paper deals with the laminar-turbulent transition prediction on helicopter rotors in hover andforward flight for RANS based rotor performance prediction. The investigation employs empirical criteriaand covers transition mechanisms due to Tollmien-Schlichting and crossflow instabilities, laminarseparation, bypass transition and attachment line contamination. An integral method and a family ofchord- and spanwise velocity profiles are used for an approximate calculation of the laminar boundarylayer quantities. The predicted transition positions are compared to the experimental data of a BO 105 inhover (DLR flight test) and of the 7AD rotor in forward flight (GOAHEAD wind tunnel test). The effect of thelaminar flow on the predicted rotor performance is studied by comparison to fully turbulent results." @default.
- W34592630 created "2016-06-24" @default.
- W34592630 creator A5061830174 @default.
- W34592630 date "2012-09-03" @default.
- W34592630 modified "2023-09-27" @default.
- W34592630 title "Laminar-turbulent transition prediction for helicopter rotorsin hover and forward flight – a RANS based investigation oftransition mechanisms using empirical criteria" @default.
- W34592630 hasPublicationYear "2012" @default.
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