Towards High-order Methods for Rotorcraft Applications

Jimenez-Garcia, A. and Barakos, G. N. (2017) Towards High-order Methods for Rotorcraft Applications. In: 43rd European Rotorcraft Forum, Milan, Italy, 12-15 Sep 2017,

Abstract

This work presents CFD results obtained with an efficient, high-order, finite-volume scheme. The formulation is based on the variable extrapolation MUSCL-scheme, and high-order spatial accuracy is achieved using correction terms obtained through successive differentiation. The scheme is modified to cope with physical and multiblock mesh interfaces, so stability, conservativeness, and high-order accuracy are guaranteed. Results with the proposed scheme for steady flows, showed better wake and higher resolution of vortical structures compared with the standard MUSCL, even when coarser meshes were employed. The method was also demonstrated for unsteady flows using overset and moving grids for the UH-60A rotor in forward flight and the ERICA tiltrotor in aeroplane mode. The present method adds CPU and memory overheads of 47% and 23%, respectively, in performing multi-dimensional problems for routine computations.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Barakos, Professor George and Jimenez Garcia, Mr Antonio
• Authors: Jimenez-Garcia, A., and Barakos, G. N.
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• Copyright Holders: Copyright © 2017 ERF
• First Published: First published in the Proceedings of the 43rd European Rotorcraft Forum
• Publisher Policy: Reproduced in accordance with the publisher copyright policy