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Three-dimensional measurement and analysis of the compressor urethrae and urethra in postpartum women. [PDF]

Transl Androl Urol
Feng Y, He G, Fu S, Hu Y, Wang Q, Zhai L, Yu R.   +6 more
europepmc   +1 more source

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Optimized efficiency axial-flow compressor

Applied Energy, 2005
A preliminary design efficiency-optimization of an axial-flow compressor, using one-dimensional flow theory, is studied in this paper. A model for the optimum design of a compressor stage, assuming a fixed distribution of axial velocities, is presented. The absolute inlet and exit angles of the rotor are taken as design variables.
Lingen Chen, Chih Wu
exaly   +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

Nonlinear control experiments on an axial flow compressor

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002
A nonlinear control law is designed for a low order model of an axial flow compressor with a ring of bleed valves after the last compressor stage. The controller is implemented on a low speed, three stage experimental compressor. The region of attraction guaranteed by the control law is experimentally determined and is larger than that of the ...
Daniel Fontaine, Shengfang Liao, James Paduano, Petar V. Kokotovic   +3 more
openaire   +1 more source

Investigations of Axial-Flow Compressors

Journal of Fluids Engineering, 1951
Abstract An approximate theory of the general perfect fluid flow in axial turbomachines is presented. The validity of the simplifying assumptions of the theory is justified by comparison with flow patterns measured in a large, low-speed, axial-flow compressor.
J. T. Bowen, R. H. Sabersky, W. D. Rannie   +2 more
openaire   +1 more source

Prestall Instability in Axial Flow Compressors

Journal of Turbomachinery, 2020
Abstract The aim of the present paper is to improve the physical understanding of discrete prestall flow disturbances developing in the tip area of the compressor rotor. For this purpose, a complementary instrumentation was used in a single-stage axial compressor.
Marc Lehmann, Dieter Peitsch, Roland Rückert, Mario Eck   +3 more
openaire   +1 more source

Robust control for axial-flow compressor - An algorithm

2008 10th International Conference on Control, Automation, Robotics and Vision, 2008
Local L2 gain method has been pursued to analyze the robustness of a family of stabilizing controllers near the rotating stall point in axial flow compressors. An matrix inequality is involved in computation of L2 gain which is usually very difficult to solve without resorting to numerical method. In order to reduce the computational cost, an algorithm
Tiebao Yang, Chun-Yi Su, Xiang Chen 0011, Henry Hu   +3 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