Innovation of the experimental facility for the study of flutter in the Institute of Thermomechanics AS CR and some results obtained from initial experiments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F16%3A00455245" target="_blank" >RIV/61388998:_____/16:00455245 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.144" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMM.821.144</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.144" target="_blank" >10.4028/www.scientific.net/AMM.821.144</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Innovation of the experimental facility for the study of flutter in the Institute of Thermomechanics AS CR and some results obtained from initial experiments

Popis výsledku v původním jazyce

The wind tunnel of a suction type was used for experiments with the fluttering profile NACA0015. Profile has two degrees of freedom, one in rotation (pitch) and the second one in translation mode (shift). Torque elasticity was realized by the coil spring and changed by the spring length and diameter of the spring wire. The pitch angle of the profile was measured by the magnetic rotary encoder. The translation was indicated by the magnetic linear encoder and was centered by plane springs situated on both ends of the shiftable frame. With this model the testing measurement of the self-excited vibration of flutter type in the range of Mach numbers M = 0.20-0.215 and Reynolds numbers Re = (2.63-2.83)105 was realized. Results obtained for M = 0.21 and Re = 2.76105 are presented. The measurement was adapted for the flow field evaluation by optical methods [1]. Turbulence level was approximately 0.6 %.

Název v anglickém jazyce

Innovation of the experimental facility for the study of flutter in the Institute of Thermomechanics AS CR and some results obtained from initial experiments

Popis výsledku anglicky

The wind tunnel of a suction type was used for experiments with the fluttering profile NACA0015. Profile has two degrees of freedom, one in rotation (pitch) and the second one in translation mode (shift). Torque elasticity was realized by the coil spring and changed by the spring length and diameter of the spring wire. The pitch angle of the profile was measured by the magnetic rotary encoder. The translation was indicated by the magnetic linear encoder and was centered by plane springs situated on both ends of the shiftable frame. With this model the testing measurement of the self-excited vibration of flutter type in the range of Mach numbers M = 0.20-0.215 and Reynolds numbers Re = (2.63-2.83)105 was realized. Results obtained for M = 0.21 and Re = 2.76105 are presented. The measurement was adapted for the flow field evaluation by optical methods [1]. Turbulence level was approximately 0.6 %.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-10527S" target="_blank" >GA13-10527S: Analýza subsonického flutteru elasticky uložených profilů s využitím interferometrie a CFD</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Applied Mechanics and Materials

ISSN

1660-9336

e-ISSN

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Svazek periodika

821

Číslo periodika v rámci svazku

2016

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

144-151

Kód UT WoS článku

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EID výsledku v databázi Scopus

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