...Qin Cui; Guoliang Qin; Jian Lei; Yi Wang; Cheng Jia The study investigates the impact of diverse endwall contouring strategies on the operational stability of a high-pressure ratio centrifugal compressor stage. Employing numerical simulation techniques, this study examines the implications...

...Paolo Silvestri; Carlo Alberto Niccolini Marmont Du Haut Champ; Federico Reggio; Mario Luigi Ferrari; Aristide Fausto Massardo High-speed centrifugal compressors may be exploited to pressurize fuel cell systems. Nonetheless, due to fuel cells significant interposed volumes, compressor behavior can...

.... This article aims at narrowing the knowledge gap in operating such plants, leveraging the test experience of a full-scale 5 MW centrifugal compressor (CC) prototype designed for the sCO 2 -flex project (H2020 funded program, grant agreement No. 764690). The test rig replicated a complete recycle loop...

.... This work presents a vibro-acoustic experimental investigation on a centrifugal compressor of an automotive turbocharger aimed to identify and confirm some surge precursor values in correspondence of its inception conditions. The experimental campaign was carried out at the University of Genoa and developed...

... 2 ) Based Power Cycles , Woodhead Publishing , Duxford, UK. [6] Baltadjiev , N. D. , Lettieri , C. , and Spakovszky , Z. S. , 2015 , “ An Investigation of Real Gas Effects in Supercritical CO 2 Centrifugal Compressors ,” ASME J. Turbomach. , 137 ( 9 ), p. 091003...

...Hongkun Li; Xinwei Zhao; Qiang Zhou; Shuhua Yang; Xiaowen Zhang Understanding of the fluid–structure interaction phenomena in centrifugal compressors is essential for the impeller structural integrity design. To enhance the understanding of blade vibration in a realistic flow environment, a single...

...Paolo Silvestri; Silvia Marelli; Massimo Capobianco The use of centrifugal compressors has been increasing tremendously in the last decade as they are a key component in the present energy scenario both in the modern internal combustion engine design and in advanced cycles and innovative plant...

...Jiří Vacula; Pavel Novotný Researchers from all over the world have been researching the aerodynamics of centrifugal compressors. They have explained many properties of the aerodynamic phenomena occurring in centrifugal compressors during their operation and have introduced various terms. This work...

... near-wall resolution to the application of wall functions based on the local value of the y + . The aerodynamic design and analysis of centrifugal compressors is usually carried out with multiple models, featuring different levels of fidelity and computational cost. In this work, a zero...

...Herbert M. Harrison; Nicole L. Key A new method of modeling slip factor and work input for centrifugal compressor impellers is presented. Rather than using geometry to predict the behavior of the flow at the impeller exit, the new method leverages governing relationships to predict the work input...

... entropy has been used for stall warning, and thus, its definition and utility are presented in detail. The technique is applied to stall data sets from two different compressors: a high-speed centrifugal compressor that unexpectedly entered rotating stall during a speed transient and a multistage axial...

...-mail:  p.silvestri@unige.it e-mail:  mario.ferrari@unige.it e-mail:  massardo@unige.it 02 09 2020 08 09 2020 12 11 2020 centrifugal compressor surge experimental HOSA wavelet analysis References [1] Ferrari , M. L. , Traverso , A. , and Massardo...

...Ce Yang; Botai Su; Li Fu; Hang Zhang Tip leakage flow (TLF) patterns, which affect compressor performance, are closely related to compressor stability. To date, minimal attention has been given to circumferential nonuniformity of the TLF in a centrifugal compressor with a nonaxisymmetric volute...

...Wei Xu; Tong Wang; Chuangang Gu; Liang Ding The holed casing treatment is a new type of casing treatment that has self-adaptability for a centrifugal compressor with unshrouded impeller. It was demonstrated experimentally and numerically that both the stall margin and the choked margin...