Optical Measurement and Visualization of Transonic Airflow in a Compressor Blade Cascade

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F23%3A00565287" target="_blank" >RIV/61388998:_____/23:00565287 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/23:00010501
Result on the web
<a href="https://link.springer.com/content/pdf/10.1007/s12650-022-00901-3.pdf?pdf=button" target="_blank" >https://link.springer.com/content/pdf/10.1007/s12650-022-00901-3.pdf?pdf=button</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s12650-022-00901-3" target="_blank" >10.1007/s12650-022-00901-3</a>

Result language
angličtina
Original language name
Optical Measurement and Visualization of Transonic Airflow in a Compressor Blade Cascade
Original language description
The paper deals with optical measurements of transonic flow past a five-blade compressor blade cascade. The middle blade of this cascade can be set to different incidence angles simulating its torsional deformation. Classical optical methods (shadowgraphy, monochrome and color schlieren) were applied to visualize flow field in the inlet part of the cascade and compared to results obtained using a recent fiber-based spatial carrier digital interferometric setup. Measurements were done at inlet Mach number 1.09 and pressure ratio 1.32 with the middle blade set at 0∘ and 3∘ incidence offset. Results of individual techniques are analyzed and their utility is assessed. Shock wave configuration is best revealed by shadowgraphy, which is the least demanding method, whereas most information is provided by the digital interferometry. It is proved that the current interferometric setup is well applicable even when inexpensive acrylic glass optical windows are used. Thus, the method can be readily used for aerodynamic investigations where modifications of sidewalls are required.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20302 - Applied mechanics

Project
<a href="/en/project/LTAUSA19036" target="_blank" >LTAUSA19036: Advanced experimental research on synchronous and non-synchronous blade vibration</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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