Afterbody Vortex Flows and Passive Flow Control

Abstract

Experiments have been carried out in a wind tunnel in order to study the aerodynamics ofafterbody vortex flows pertinent to cargo aircraft with upswept afterbodies. The overallaim of the study was to understand detailed vortex flow physics, to examine passive flowcontrol methods for drag reduction, and to examine the flowfield with the cargo rampdoor deployed. The simplified wind tunnel models were axisymmetric slanted base cylinderswhich have previously been utilised for afterbody vortex flow generation and weretested at ReD = 200; 000. Drag force, 2D Particle Image Velocimetry (PIV) and surfacepressure measurements were conducted along with detailed flowfield analysis of PIV dataincluding unsteady aspects of the flow.

Date of Award	13 Feb 2019
Original language	English
Awarding Institution	University of Bath
Supervisor	Ismet Gursul (Supervisor) & Zhijin Wang (Supervisor)