CUED Publications database

Experiments and Computations on the Lift of Accelerating Flat Plates at Incidence

Stevens, PRRJ and Babinsky, H and Manar, F and Mancini, P and Jones, AR and Nakata, T and Phillips, N and Bomphrey, RJ and Gozukara, AC and Granlund, KO and Ol, MV (2017) Experiments and Computations on the Lift of Accelerating Flat Plates at Incidence. AIAA Journal. pp. 1-11. ISSN 0001-1452

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Abstract

This paper discusses the force history and flow topology of accelerating flat-plate wings. The work is a collaborative effort to study fundamental, unsteady low-Reynolds-number flows. The motion kinematics is designed to be relevant to the micro air vehicle flight regime. A combination of experimental and computational techniques is used to obtain data for comparison. There is a striking correlation of lift history data and flow topology from both experimental and computational data sets. It is found that the leading/trailing-edge vortex core separation during the initial part of a surge motion can be reasonably well approximated by c⋅cosα, , and the leading/trailing-edge vortex relative advection velocity is estimated to be 0.5⋅U∞. This leading/trailing-edge vortex relative advection velocity is a useful measure of how quickly the trailing-edge vortex moves away from the leading-edge vortex, which can influence lift for accelerating flat plates at high incidence angles.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 23 Aug 2017 20:06
Last Modified: 14 Sep 2017 01:28
DOI: