Results 171 to 180 of about 24,432 (206)

Numerical Investigation of Inlet Distortion on the Stall Inception of a Radial Compressor

Volume 2D: Turbomachinery, 2014
In this paper unsteady CFD computations are used to study the stability and the rotating stall inception of a transonic radial compressor, considering two different configurations influencing the inlet flow. The prediction of the surge and stall limit for a centrifugal compressor is a key parameter for operating such machines, and hence requires ...
VAGNOLI, STEFANO, Verstraete, T.
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3D Unsteady Computation of Stall Inception in Axial Compressors

Volume 7: Turbomachinery, Parts A, B, and C, 2010
Rotating stall is one of the unsteady phenomena in multistage axial compressors that will damage both of performance and service life of aero engines. Stall inception is a dynamic process including appearance of pre-stall disturbance, evolvement of disturbances into stall cells, and development of stall cells.
Baofeng Tu, Jun Hu, Yong Zhao
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Investigation on the Stall Inception Circumferential Position and Stall Process Behavior in a Centrifugal Compressor With Volute

Volume 2B: Turbomachinery, 2018
The present paper numerically and experimentally investigates the stall inception mechanisms in a centrifugal compressor with volute. Current studies about stall inception pay more attention on the axial compressors than the centrifugal compressors; especially, the circumferential position of stall inception onset and the stall process in the ...
Hanzhi Zhang, Ce Yang, Dengfeng Yang, Wenli Wang, Changmao Yang, Mingxu Qi   +5 more
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Computational Approach for Predicting Stall-Inception in Multi-Stage Axial Compressors

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005
A new time-accurate computational approach for predicting stall inception due to long- and short-wavelength phenomena in multistage axial compressors is introduced. The computational approach uses a time-accurate single-blade-passage multi-blade-row strategy that includes many of the primary unsteady modes associated with the early symptoms of stall ...
Roger L. Davis, Jixian Yao
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An Investigation of Stall Inception in Centrifugal Compressor Vaned Diffuser1

Journal of Turbomachinery, 2012
In compression systems, the stable operating range is limited by rotating stall and/or surge. Two distinct types of stall precursors can be observed prior to full scale instability: the development of long-wavelength modal waves or a short-wavelength, three-dimensional flow breakdown (so-called “spike” stall inception).
Jonathan N. Everitt, Zoltán S. Spakovszky   +1 more
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Experimental Investigation on the Stall Inception of a Counter-Rotating Compressor

Volume 8: Turbomachinery, Parts A, B, and C, 2012
For investigating the flow phenomena in the stall process of a counter-rotating compressor (CRC), static and dynamic experiment have been carried out on a low speed counter-rotating compressor. Seven high response pressure sensors were mounted at the leading edge of rotor 1(R1) and rotor 2(R2) as well as at the outlet of R2 blade tip and root.
Zhuoqi Wang, Wei Yuan, Qiushi Li, Yajun Lu   +3 more
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Effects of Fan Speed on Rotating Stall Inception and Recovery

Volume 7: Turbomachinery, Parts A, B, and C, 2010
An implicit, time-accurate 3D compressible RANS solver is used to simulate rotating stall inception and recovery, the so-called rotating stall hysteresis, in a modern fan geometry. In the first instance, rotating stall was simulated for 70%, 80% and 90% fan speeds using a whole-annulus fan model with a variable-area nozzle downstream.
Minsuk Choi, Mehdi Vahdati, Mehmet Imregun   +2 more
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Effect of RANS Method on Stall Inception Eigenvalue Approach

Volume 2B: Turbomachinery, 2017
The effect of mesh, turbulence model and discretization scheme in Reynolds-averaged Navier-Stokes method (RANS) on a stall inception eigenvalue approach is investigated in a transonic compressor rotor. The most influencing flow structures on the result of eigenvalue approach are also identified.
Zhe Xie, Yangwei Liu, Xiaohua Liu, Lipeng Lu, Xiaofeng Sun   +4 more
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Spike-Type Compressor Stall Inception, Detection, and Control

Annual Review of Fluid Mechanics, 2010
An aerodynamic instability known as stall occurs in axial compressors as the mass flow rate is reduced and the blade loading reaches its limit. At this limiting condition, an easily recognizable flow breakdown process, known as spike-type stall inception, is observed in most modern compressors.
C.S. Tan, I. Day, S. Morris, A. Wadia
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Stall Inception in a High Speed Centrifugal Compressor During Speed Transients

Volume 2C: Turbomachinery, 2017
The inception and evolution of rotating stall in a high-speed centrifugal compressor are characterized during speed transients. Experiments were performed in the Single Stage Centrifugal Compressor (SSCC) facility at Purdue University and include speed transients from sub-idle to full speed at different throttle settings while collecting transient ...
Fangyuan Lou, John C. Fabian, Nicole L. Key   +2 more
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