Flow Past a Self-oscillating Airfoil with Two Degrees of Freedom: Measurements and Simulations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F14%3A%230003394" target="_blank" >RIV/46747885:24220/14:#0003394 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24620/14:00000327

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/20146702108" target="_blank" >http://dx.doi.org/10.1051/epjconf/20146702108</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20146702108" target="_blank" >10.1051/epjconf/20146702108</a>

Result language

angličtina

Original language name

Flow Past a Self-oscillating Airfoil with Two Degrees of Freedom: Measurements and Simulations

Original language description

The paper focuses on investigation of the unsteady subsonic airflow past an elastically supported airfoil for subcritical flow velocities and during the onset of the flutter instability. A physical model of the NACA0015 airfoil has been designed and manufactured, allowing motion with two degrees of freedom: pitching (rotation about the elastic axis) and plunging (vertical motion). The structural mass and stiffness matrix can be tuned to certain extent, so that the natural frequencies of the two modes approach as needed. The model was placed in the measuring section of the wind tunnel in the aerodynamic laboratory of the Institute of Thermomechanics in Novy Knin, and subjected to low Mach number airflow up to the flow velocities when self-oscillation reach amplitudes dangerous for the structural integrity of the model. The motion of the airfoil was registered by a high-speed camera, with synchronous measurement of the mechanic vibration and discrete pressure sensors on the surface of the airfoil. The results of the measurements are presented together with numerical simulation results, based on a finite volume CFD model of airflow past a vibrating airfoil..

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

—

Project

<a href="/en/project/GA13-10527S" target="_blank" >GA13-10527S: Subsonic flutter analysis of elastically supported airfoils using interferometry and CFD</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EPJ Web of Conferences

ISBN

978-80-260-5375-0

ISSN

2100-014X

e-ISSN

—

Number of pages

8

Pages from-to

1-8

Publisher name

EDP Sciences

Place of publication

Les Ulis, Francie

Event location

Kutná Hora

Event date

Jan 1, 2013

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000343672100111