Parallel Solution of Lifting Rotors in Hover and Forward Flight

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

An implicit unsteady, multiblock, multigrid, upwind solver including mesh deformation capability, and structured multiblock grid generator, are presented and applied to lifting rotors in both hover and forward flight. To allow the use of very fine meshes and, hence, better representation of the flow physics, a parallel version of the code has been developed. It is demonstrated that once the grid density is sufficient to capture enough turns of the tip vortices, hover exhibits oscillatory behaviour of the wake, even using a steady formulation. An unsteady simulation is then presented, and detailed analysis of the time-accurate wake history is performed and compared to theoretical predictions. Forward flight simulations are also presented and, again, grid density effects on the wake formation investigated. Parallel performance of the code using up to 1024 CPU's is also presented.
Translated title of the contributionParallel Solution of Lifting Rotors in Hover and Forward Flight
Original languageEnglish
Pages (from-to)15 - 27
Number of pages13
JournalInternational Journal for Numerical Methods in Fluids
Volume55 (1)
DOIs
Publication statusPublished - Sep 2007

Bibliographical note

Publisher: John Wiley & Sons

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