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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/EF16_026%2F0008389" target="_blank" >EF16_026/0008389: Research Cooperation for Higher Efficiency and Reliability of Blade Machines</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Strojnícky časopis - Journal of Mechanical Engineering

ISSN

0039-2472

e-ISSN

2450-5471

Volume of the periodical

73

Issue of the periodical within the volume

2

Country of publishing house

SK - SLOVAKIA

Number of pages

18

Pages from-to

15-32

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85179111370