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Keywords: centrifuges
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Journal Articles
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041012.
Published Online: May 5, 2010
...Michele Marconcini; Filippo Rubechini; Andrea Arnone; Seiichi Ibaraki A three-dimensional Navier–Stokes solver is used to investigate the flow field of a high pressure ratio centrifugal compressor for turbocharger applications. Such a compressor consists of a double-splitter impeller followed...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2004, 126(1): 1–12.
Published Online: March 26, 2004
...Z. S. Spakovszky Rotating stall waves that travel against the direction of rotor rotation are reported for the first time and a new, low-order analytical approach to model centrifugal compressor stability is introduced. The model is capable of dealing with unsteady radially swirling flows...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2004, 126(1): 73–81.
Published Online: March 26, 2004
...M. Zangeneh; M. Schleer; F. Pløger; S. S. Hong; C. Roduner; B. Ribi; R. S. Abhari In this paper the three-dimensional inverse design code TURBOdesign-1 is applied to the design of the blade geometry of a centrifugal compressor impeller with splitter blades. In the design of conventional impellers...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2003, 125(4): 704–713.
Published Online: December 1, 2003
...Gary J. Skoch Results from a series of experiments to investigate techniques for extending the stable flow range of a centrifugal compressor are reported. The research was conducted in a high-speed centrifugal compressor at the NASA Glenn Research Center. The stabilizing effect of steadily flowing...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2003, 125(1): 173–182.
Published Online: January 23, 2003
...Kai U. Ziegler; Heinz E. Gallus; Reinhard Niehuis The interaction between impeller and diffuser is considered to have strong influence on the flow in centrifugal compressors. However, the knowledge about this influence is still not satisfying. This two-part paper presents an experimental...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2002, 124(1): 19–26.
Published Online: February 1, 2001
... and a single-stage centrifugal compressor, would improve by 0.8 percent if the efficiency of the back stage centrifugal unit could be raised by 4 percent. It was expected that this would result in a noticeable improvement of the thermal gas turbine efficiency. The paper describes the aerodynamic design process...
Journal Articles
Article Type: Article
J. Turbomach. January 2001, 123(1): 79–80.
Published Online: January 1, 2001
...N. A. Cumpsty, Chief Technologist, compressors centrifuges optimisation fluid dynamics turbulence stagnation flow I found this an interesting and original paper. Although I do not pretend to understand the details of the optimization procedure, I am interested in the predictions...
Journal Articles
Article Type: Article
J. Turbomach. January 2001, 123(1): 80.
Published Online: January 1, 2001
...Yu-Tai Lee,; Lin Luo, and; Thomas W. Bein compressors centrifuges fluid dynamics optimisation turbulence stagnation flow The point made by Professor Cumpsty concerning the results related to the variation of the weighting coefficients shown in Fig. 7 is well taken. We found...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2000, 122(3): 536.
Published Online: July 1, 2000
... it clear that a parasitic effect (internal conduction) is superimposed on the classic aerodynamic compression/conduction phenomenon, while the definition of the ratio is analogous to the classic recovery factor. gas turbines measurement systems probes compressors centrifuges aerodynamics heat...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2001, 123(3): 473–482.
Published Online: February 1, 2000
...Gianmario L. Arnulfi; Pietro Giannattasio; Diego Micheli; Piero Pinamonti The present paper reports a numerical–experimental study on the dynamic behavior of a compression system based on a multistage centrifugal blower and fitted with an innovative device for the dynamic suppression of surge...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 73–79.
Published Online: February 1, 2000
.... using an adjoint method. The benchmark indicates that if a global optimum exists, the result should be independent of the methodologies or design parameters used. The DMO/RANS method is applied to redesign a three-dimensional centrifugal vaneless diffuser used in a modern generic compressor...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 64–72.
Published Online: February 1, 2000
... on the fact that the local reverse flow occurs first in the hub side in most centrifugal blowers with a backswept blade impeller. The three-dimensional boundary layer calculation shows that the increase in wall shear component normal to the main-flow direction markedly decreases the skewed angle of the three...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2000, 122(4): 777–786.
Published Online: February 1, 2000
...Y. K. P. Shum; C. S. Tan; N. A. Cumpsty A study has been conducted, using an unsteady three-dimensional Reynolds-averaged Navier–Stokes simulation, to define the effect of impeller–diffuser interaction on the performance of a centrifugal compressor stage. The principal finding from the study...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2001, 123(2): 418–428.
Published Online: January 1, 2000
... of a high-speed centrifugal compressor. Through the acquisition of both DPIV images and transient pressure data, the time evolution of the unsteady flow during surge is revealed. Weigl , H. J. , Paduano , J. D. , Fre´chette , L. G. , Epstein , A. H. , Greitzer , E. M. , Bright...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2000, 122(3): 485–493.
Published Online: February 1, 1999
... “Astar” & HH-65 “Dolphin,” and the Bell 222. Fink, D. A., 1988, “Surge Dynamics and Unsteady Flow Phenomena in Centrifugal Compressors,” MIT Gas Turbine Laboratory Report No. 193. Huang , X. Y. , and Ffowcs Williams , J. E. , 1989 , “ Active Stabilization of Compressor Surge...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2000, 122(3): 527–535.
Published Online: February 1, 1999
...Pascal Ko¨ppel; Christian Roduner; Peter Kupferschmied; Georg Gyarmathy Typically several hundred million data points arise from a comprehensive measurement campaign carried out in a centrifugal compressor test rig with the fast-response aerodynamic probe system (see Part 1). In order to obtain...