Accession Number : ADP005888
Title : Short Duration Flow Establishment on a Profile in a Water-Ludweig-Tunnel,
Corporate Author : TECHNISCHE HOCHSCHULE AACHEN (GERMANY F R)
Personal Author(s) : Kerres, W. ; Groenig, H.
Report Date : JUN 1987
Pagination or Media Count : 12
Abstract : This paper deals with the time dependent establishment of the flow field on an airfoil in unsteady flow. The impulsive start of the flow is achieved in a Water-Ludwieg-Tunnel. By using a coded particle tracing method for flow visualization, the detailed flow establishment on a NACA 0012 airfoil at 30 deg angle of attack is shown from the beginning where potential flow exists with zero circulation to a 'quasi-steady' formation of the vortex street.
Descriptors : *UNSTEADY FLOW, AIRFOILS, FLOW FIELDS, TIME DEPENDENCE, ANGLE OF ATTACK, FLOW VISUALIZATION, VORTICES, VORTEX SHEDDING, WATER TUNNELS, ACCELERATION, PULSES, WEST GERMANY.
Subject Categories : Aerodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE