Results 251 to 260 of about 32,232 (297)

The Number and Speed of Stall Cells During Rotating Stall

Volume 6: Turbo Expo 2003, Parts A and B, 2003
The number of stall cells and their rotational speed are distinctive features of the rotating stall phenomenon and play an important role in the prediction and analysis of the pressure fields during rotating stall. Various aspects of numbers and speed of stall cells are analyzed using an original interpretation method based on the pressure distribution
Y. Levy, J. Pismenny
openaire   +1 more source

Investigating rotating stall

World Pumps, 2020
Rotating stall is a flow phenomenon which can induce high vibration and damage to a system. In this case, the problems were addressed through an engineering design review and modifications, preventing further issues and restoring efficiency.
openaire   +1 more source

Rotating stall control via bifurcation stabilization

ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187), 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiang Chen 0011, Guoxiang Gu, Phillip Martin, Kemin Zhou   +3 more
openaire   +2 more sources

Rotating Stall in Axial Flow Compressors

Journal of the Aeronautical Sciences, 1957
The classical theories of linearized aerodynamics yields a complete description of the flow field due to the rotating stall in a two-dimensional cascade of airfoils, when the extension of the stalled region is small. The corresponding physical scheme can be used for larger stalled regions, without the limitations of the linearizing assumptions, if no ...
Fabri, Jean, Siestrunck, Raymond
openaire   +2 more sources

Rotating Stall and Surge

Journal of Fluids Engineering, 1980
Safe off-design operation of compressors is limited to the region in which the flow is stable. Flow instabilities can be of two types, rotating stall and surge. The first of these subjects the blading to high oscillating stresses while the second may also have a disastrous effect on the whole system of which the compressor is a component. In this paper,
openaire   +1 more source

Simulation of the Onset of Rotating Stall

Fluids Engineering, 2001
Abstract This paper presents the results of a series of numerical simulations exploring the stability of fluid flow in vaneless diffusers of centrifugal compressors. Three-dimensional, time-dependent, Reynolds-averaged Navier-Stokes simulations were performed for a fixed diffuser width ratio.
Christopher J. Freitas, Anthony J. Smalley   +1 more
openaire   +1 more source

Rotating stall control for axial flow compressors

Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171), 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Calin Belta, Guoxiang Gu, Andrew G. Sparks, Siva Banda   +3 more
openaire   +2 more sources

Modeling and control of rotating stall and surge: an overview

Proceedings of the 1998 IEEE International Conference on Control Applications (Cat. No.98CH36104), 2002
Stable operation of both axial and radial compressors is constrained by rotating stall and surge. Developments in the understanding of the physics behind these instabilities, and ideas of how to stabilize the compressor system, have opened the door to a new era in the field of compressor control: so-called active control. The paper gives an overview of
Willems, F.P.T., de Jager, Bram
openaire   +2 more sources

Rotating Stall Characteristics in a Wide Vaneless Diffuser

Volume 6: Turbo Expo 2005, Parts A and B, 2005
Paper reports a numerical study on vaneless diffuser flow instability performed for the purpose of better understanding of rotating stall mechanism in radial vaneless diffusers. This analysis is restricted to the two-dimensional flow where effect of wall boundary layers is neglected.
Ljevar, S., Lange, de, H.C., Steenhoven, van, A.A.   +2 more
openaire   +2 more sources

Nonlinear Analysis of Rotating Stall

Journal of Engineering for Power, 1972
A new stall model to describe rotating stall in axial-flow compressors is established, where blade rows are replaced by semiactuator disks, flow fluctuations are permitted to be finite and nonsteady, and blade row characteristics are taken into consideration in nonlinear and nonsteady forms. Through numerical analysis using the finite difference method,
H. Takata, S. Nagano
openaire   +1 more source