Jyoti Majhi, Kartik Venkatraman

DOI Number: N/A

Conference number: IFASD-2024-175

Shock oscillation arising due to shock-boundary layer interaction in transonic flow, also known as transonic buffet, gives rise to time varying airloads on fan and compressor blades,
which can lead to failure of the concerned component through fatigue. Therefore, accurate estimates of the onset of transonic buffet, shock displacement, and buffet frequency are critical to lifing assessment of turbomachinery blades. In the present work, we use a global stability framework for transonic flow to predict transonic shock buffet in an axial flow fan, the NASA rotor 67. Global stability analysis of fluid flow involves investigation of the behavior of a steady or mean flow field, also known as base flow, upon introduction of small three-dimensional perturbations, in terms of growth or decay of the resulting flow field. In this work, aerodynamic stability of the flow field is predicted at an operating point on the fan operating map, where buffet is reported, using global stability analysis, and the prediction obtained so is compared vis-`a-vis the prediction obtained using unsteady Reynolds-averaged Navier-Stokes (URANS) simulation.

Read the full paper here

In Categories: 1. IFASD 2024, 1.Events, Steady/Unsteady Aerodynamics
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.