Flutter Measurement of a Linear Turbine Blade Cascade with an Angular Position Deviation of One Blade

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F23%3A43971015" target="_blank" >RIV/49777513:23210/23:43971015 - isvavai.cz</a>

Výsledek na webu

<a href="https://sciendo.com/article/10.2478/scjme-2023-0019" target="_blank" >https://sciendo.com/article/10.2478/scjme-2023-0019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/scjme-2023-0019" target="_blank" >10.2478/scjme-2023-0019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flutter Measurement of a Linear Turbine Blade Cascade with an Angular Position Deviation of One Blade

Popis výsledku v původním jazyce

Experimental flutter testing of high-aspect ratio rotor blades is a mainstay of turbomachinery research. However, rotor blades are never identical, and geometrical errors between actual and nominal geometries exist due to limited machining precision or assembly imperfection. The paper presents the initial phase of the controlled flutter research of a linear turbine blade cascade with a geometric deviation in one blade position. A subsonic wind tunnel with four flexibly mounted blades in an otherwise rigid blade cascade is employed at one angle of incidence and three low reduced frequencies. Measurements are performed with an angular position deviation (±1.5°) of one blade in pure bending and torsion modes. A tangible effect of one blade’s slight incidence angle offset on the vibrating blade cascade aerodynamic stability is demonstrated, and this research effort opens the door to a more extensive testing campaign.

Název v anglickém jazyce

Flutter Measurement of a Linear Turbine Blade Cascade with an Angular Position Deviation of One Blade

Popis výsledku anglicky

Experimental flutter testing of high-aspect ratio rotor blades is a mainstay of turbomachinery research. However, rotor blades are never identical, and geometrical errors between actual and nominal geometries exist due to limited machining precision or assembly imperfection. The paper presents the initial phase of the controlled flutter research of a linear turbine blade cascade with a geometric deviation in one blade position. A subsonic wind tunnel with four flexibly mounted blades in an otherwise rigid blade cascade is employed at one angle of incidence and three low reduced frequencies. Measurements are performed with an angular position deviation (±1.5°) of one blade in pure bending and torsion modes. A tangible effect of one blade’s slight incidence angle offset on the vibrating blade cascade aerodynamic stability is demonstrated, and this research effort opens the door to a more extensive testing campaign.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EF16_026%2F0008389" target="_blank" >EF16_026/0008389: Výzkumná spolupráce pro dosažení vyšší účinnosti a spolehlivosti lopatkových strojů</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Strojnícky časopis - Journal of Mechanical Engineering

ISSN

0039-2472

e-ISSN

2450-5471

Svazek periodika

73

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

18

Strana od-do

15-32

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85179111370