The flow within the endwall region of modern high pressure axial compressors including common cavities like stator wells or bleed ports is analyzed by means of unsteady CFD methods. Aiming to identify the unsteady nature of the interaction between the main flow within the annulus and the one within common axial compressor cavities, two different compressor stages, representing transonic and subsonic designs, are simulated. The unsteady flow structure near the endwall region is analyzed in detail. It is shown that the corresponding unsteadiness of the flow in the cavities is small compared to the amplitudes recognized in the main flow path and is also bounded to the contact region between annulus and cavity geometry.
The present work aims to increase the knowledge about unsteady flow processes within the endwall region and their importance for future axial compressor design.
«
The flow within the endwall region of modern high pressure axial compressors including common cavities like stator wells or bleed ports is analyzed by means of unsteady CFD methods. Aiming to identify the unsteady nature of the interaction between the main flow within the annulus and the one within common axial compressor cavities, two different compressor stages, representing transonic and subsonic designs, are simulated. The unsteady flow structure near the endwall region is analyzed in detail...
»