...Julien Marty; Lionel Castillon; Pierric Joseph The operating range of a compressor is limited by surge or rotating stall line, among others. Numerical simulations must accurately predict these phenomena. This study is based on the experimental compressor CME2, which is a low-subsonic axial...

... Email: plcargill@gmail.com Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 09 08 2022 05 10 2022 05 10 2022 07 11 2022 compressor stall surge operability fan compressor turbomachinery...

...Zoltán S. Spakovszky Many of the challenges that limited aero-engine operation in the 1950s, 1960s, 1970s, and 1980s were static in nature: hot components exceeding temperature margins, stresses in the high-speed rotating structure approaching safety limits, and turbomachinery aerodynamic...

... operating range, equivalent to 2% of nozzle area. Overall, the fan design tolerates the sideslip distortion well and demonstrates the importance of the coupling of both swirl and total pressure distortion with the fan aerodynamics. 1 Corresponding author. Email: ac2181@cam.ac.uk Email: cah1003...

... Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 16 07 2022 21 08 2022 22 08 2022 19 09 2022 casing treatment compressor stall surge operability Non-uniform flow at the inlet to a turbofan...

...Yannick Bousquet; Nicolas Binder; Ludovic Rojda; Adrien Thacker The present work analyzes the three-dimensional unsteady flow structure of a low-speed low-pressure ratio axial fan stage operating at stall conditions. Unsteady numerical simulations were conducted with the els A software, which...

...Jack Hutchings; Cesare A. Hall Previous research into axial compressor stall has mainly focused on stall inception and methods to extend the stable operating range. This paper considers the performance of an axial compressor beyond stall and investigates how the characteristics of stall cells...

... for publication in the J ournal of T urbomachinery . 12 07 2021 17 08 2021 18 08 2021 27 09 2021 aeromechanical instabilities compressor stall surge operability nonsynchronous vibration mistuning Cleansky 10.13039/501100000922 864719 Engineering and Physical...

... aeromechanical instabilities compressor stall surge operability non-synchronous vibration (NSV) measurement techniques Agence Nationale de la Recherche 10.13039/501100001665 EquipEx PHARE Association Instituts Carnot 10.13039/501100006367 MERIT Cleansky 10.13039/501100000922...

... air in the reverse direction though the compressor while the impeller is spinning in the forward direction to obtain data in the negative mass flow region of the compressor map. This demonstrated experimentally that there is a stable operating region in the reverse flow regime. The recorded data...

... assessed the effect of inlet distortion to understand, analyze, and predict its impact on the operation of an engine [ 17 – 21 ]. The common characteristic of these numerical strategies based on unsteady Reynolds-averaged Navier–Stokes (URANS) simulations is their high computational cost. As a consequence...

... and Sermatech International participated in this exercise. This research resulted in a reduction in airline operating cost through fuel savings of 35,000 gal per year per engine and 3 months more time on the wing for an engine which, if implemented on fans of high bypass ratio (BPR) engines, results in a cost...

... instabilities Compressor stall Surge Operability Modern aero-engines are often expected to operate under different environmental conditions for increasing lengths of time while keeping safety and reliability paramount priorities. Water in the form of rain is a perennial environmental factor. Aero...

.... , Bouldin , B. , and Krishnan , P. M. , 2011 , “ Compressor Performance and Operability in Swirl Distortion ,” ASME J. Turbomach. , 134 ( 4 ), p. 041008 . 10.1115/1.4003657 [4] Pardo , A. C. , Mehdi , A. , Pachidis , V. , and MacManus , D. G. , 2014 , “ Numerical Study...

.... Manuscript received August 25, 2016; final manuscript received February 28, 2018; published online May 10, 2018. Assoc. Editor: Nicole L. Key. 25 08 2016 28 02 2018 Compressor stall Surge Operability Stall is a type of flow instability in aero-engine compressors...

... for Fluid Dynamics (VKI). The test item has been tested in different operative conditions for two different speed lines (90% and 96% of the design speed) and for two different Reynolds numbers. Stable and unstable operative conditions have been investigated along with the stalling behavior, its inception...

... development due to vortex breakdown; transonic speedline Aeromechanical instabilities Fan Measurement techniques Compressor stall Surge Compressor Turbine aerodynamic design Operability Although the phenomena limiting the stability of transonic compressors have been the subject...

...; final manuscript received November 3, 2017; published online February 21, 2018. Editor: Kenneth Hall. 22 10 2017 03 11 2017 Compressor stall Design Surge Turbomachinery blading Operability The steady CFD is capable of simulating the overall performance and the main flow...

... OF T URBOMACHINERY . Manuscript received October 21, 2017; final manuscript received December 27, 2017; published online January 17, 2018. Editor: Kenneth Hall. 21 10 2017 27 12 2017 Compressor stall Computational fluid dynamics Turbomachinery blading Surge Design Operability...

... Turbine aerodynamic design Compressor Operability Three-dimensional (3D) computational fluid dynamics (CFD) simulations of multiple blade rows were developed by Adamczyk [ 1 ] using the average passage approach. Each blade row was modeled separately and only one passage of each blade row...