ERF Document Repository

Assessment of laminar-turbulent transition modeling methods for the prediction of helicopter rotor performance

Show simple item record

dc.contributor.author Richez, F.
dc.contributor.author Nazarians, A.
dc.contributor.author Lienard, C.
dc.date.accessioned 2020-11-19T15:40:43Z
dc.date.available 2020-11-19T15:40:43Z
dc.date.issued 2017
dc.identifier.other 577_ERF2017
dc.identifier.uri http://hdl.handle.net/20.500.11881/3819
dc.description.abstract The influence of the laminar-turbulent transition on helicopter rotor performance in hover and forward flight is investigated by means of URANS simulations. Two different transition modeling approaches are assessed by comparison with available experimental data of the ONERA wind-tunnel scaled 7A rotor. The first one is based on semi-empirical transition criteria and the second one is the Menter-Langtry transport equation model. In hover, Menter-Langtry model slightly improves the prediction of the figure of merit, while transition criteria-based method gives an almost perfect agreement with the experiments. In forward flight, the unsteady motion of the transition obtained with criteria is in fairly good agreement with experimental data deduced from hot film measurements, while Menter-Langtry model shows more unexpected behavior. However, the rotor power predicted by both simulations is very similar. Although transition improves the rotor power prediction in forward flight, the error with respect to the experiments remains still significant.
dc.language.iso en
dc.title Assessment of laminar-turbulent transition modeling methods for the prediction of helicopter rotor performance


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search Repository


Advanced Search

Browse

My Account