...Cedric Babin; Xavier Ottavy; Fabrizio Fontaneto This paper presents the investigation of realistic cavity leakage flow for the von Karman Institute for Fluid Dynamics H25 axial compressor stage, equipped with a shroud cavity of average Reynolds number Re r = 2.2 * 10 6 and average aspect ratio G...

... 10 02 2023 fan compressor and turbine aerodynamic design measurement techniques Gedeon Richter 10.13039/501100003358 PhD Scholarship (Gábor Daku) Nemzeti Fejlesztési Minisztérium 10.13039/501100005909 ÚNKP-21-3 Nemzeti Kutatási és Technológiai Hivatal 10.13039...

... , “ A Numerical Study of Automotive Turbocharger Mixed Flow Turbine Inlet Geometry for Off Design Performance ,” Proceedings of The 6th International Conference on Pumps and Fans with Compressors and Wind Turbines , Beijing, China , Sept. 9–22 , IOP Conference Series: Materials Science and Engineering, Vol...

... distribution and the flow pattern within the ducts. Yang et al. [ 17 ] proposed a preliminary design method for the intermediate compressor duct (ICD) and ITD with conventional non-turning struts. Wallin and Eriksson [ 18 ], and Naylor et al. [ 19 ] optimized the endwalls of the ICD by means of the response...

...Michael Casey; Christopher Robinson A diagram is described which demonstrates important aspects of the exit velocity triangle of a radial compressor impeller with no inlet swirl. Although this diagram is based on work dating back to 1941, it is not widely known in the radial compressor community...

...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...

...Yoshihiro Hayashi; Teng Cao In centrifugal compressors, it is common to observe a rapid reduction in surge margin toward high rotational speed, which shows a non-linear surge characteristic against the change of rotational speed. This paper presents a comprehensive experimental and numerical study...

...Joshua M. Maynard; Andrew P. S. Wheeler; James V. Taylor; Roger Wells Direct numerical simulations (DNS) are performed of a cantilevered stator blade to identify the unsteady and turbulent flow structure within compressor tip flows. The simulations were performed with clearances of 1.6% and 3.2...

...Armando Del Rio; Ernesto Casartelli; Benno Fleischli; Luca Mangani Centrifugal compressors are mainly designed with the best efficiency point in mind and the focus oriented toward the impeller. The vaned diffuser geometry is usually developed using simple shapes, such as prismatic blades or wedges...

...Sungho Yoon; Patricia Cargill Casing treatment is an advanced design feature intended to improve the stability of a compressor. Various investigations have been conducted based on both experimental and numerical studies at least over the last 50 years. In general, it has been demonstrated...

... 2022 04 11 2022 computational fluid dynamics (CFD) fan compressor and turbine aerodynamic design fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines measurement techniques turbine blade and measurement advancements turbomachinery...

... aeromechanical instabilities computational fluid dynamics (CFD) fan compressor and turbine aerodynamic design turbomachinery blading design Civil turbofan engine technology development is propelled by the ever-increasing demand for reducing specific fuel consumption (SFC) and emissions...

...Xiawen Zhang; Yaping Ju; Zhen Li; Feng Liu; Chuhua Zhang The tradeoff between higher efficiency and wider stability of performance map is still one of the bottlenecks to hamper the further research and development of advanced multistage axial-flow compressor. The recent rapid growth...

...Tobias Doerr; Sebastian Schuster; Dieter Brillert Droplet-laden flows play a significant role in the development of turbomachinery. For example, fine water droplets are injected into the flow path of axial compressors to increase the power output of gas turbines by making use of evaporation cooling...

...Krishan S. Chana; Robert J. Miller Reaction is the fundamental parameter by which the asymmetry of the velocity triangle of a stage is set. Little is understood about the effect that a reaction has on either the efficiency or the operating range of a compressor. A particular difficulty...

... ], are mainly oriented to axial compressors and focussed on higher solidities and lower inlet flow angles (from the axial direction; Fig. 1 ) compared to fans. The latter possibility, widely employed for the design of industrial applications, consists in using the isolated airfoil data and exploiting...

...J. D. Chiapperi; E. M. Greitzer; C. S. Tan In this paper, we (i) present a methodology for determining the aerodynamic performance of bi-directional turbomachines for pumped thermal energy storage, i.e., turbomachines designed to operate as a compressor in one direction, and then as a turbine...

... compressor analysis, which predicts a more uniform axial velocity the larger the magnitude of the slope of the compressor characteristic, − d ψ / d ϕ [ 11 ]. The implication is that the fan rotor incidence distortion is determined mainly by the axial velocity distortion at the rotor and only...

... of T urbomachinery . 19 07 2022 03 09 2022 06 09 2022 12 10 2022 computational fluid dynamics (CFD) compressor and turbine aerodynamic design turbomachinery blading design robust design optimization design under uncertainty Bundesministerium für Wirtschaft...

...Beom-Jin Joe; Min-Hyeok Kim; Suk-Yoon Hong; Jee-Hun Song Prediction of the tip clearance noise (TCN) of axial compressors is essential to accurately determine the noise level of the compressor, because it is left unattenuated during propagation. The existing studies on numerical methods...