1-20 of 66
Keyword: rotors
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121101.
Published Online: December 19, 2011
..., variable-pitch inducer, designated as DAPAMITO4. The roles of the imposed whirl motion of the rotor, flow coefficient, cavitation number and liquid temperature have been investigated. A novel experimental technique, consisting in measuring the continuous spectra of the forces as functions of the whirl...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111102.
Published Online: October 24, 2011
... supersonic primary flow, impinging on freely spinning cone-vane type of rotors. These pseudoblades are fluidic vanes that interface with an entrained, compressible secondary fluid and can mimic the action of impellers as in conventional turbomachinery. The overarching goal of this research is the development...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2011, 133(10): 101102.
Published Online: October 5, 2011
... tapered-hub, variable-pitch axial inducers. The forces acting on the impeller have been measured by means of a rotating dynamometer mounted just behind the inducer. The roles of the imposed whirl motion of the rotor, flow coefficient, cavitation number, and liquid temperature have been investigated. The...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051101.
Published Online: May 31, 2011
... performance and the flow condition of the cross-flow rotor, a casing suitable for this sort of prevailing wind conditions is designed in this research and the effect of the casing is investigated by experimental and numerical analysis. In the experiment, a wind tunnel with a square discharge is used and main...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041102.
Published Online: May 12, 2011
... blade row) was selected with rotor and stator blade number kept constant. A generic undersea vehicle hull shape was chosen and the maximum shroud radius was required to lie within this body radius. A cylindrical rim-driven electric motor capable of generating a specific horsepower to achieve the design...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041101.
Published Online: May 11, 2011
... openings. A certain number of channels is blocked (rotating stall cell) while the other channels comprise sound flow. Due to a momentum exchange between rotor and stator at the front and the rear cell boundary, the cell is rotating with subsynchronous frequency of about 60 percent of the rotational speed...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021101.
Published Online: February 4, 2011
...Thien X. Dinh; Yoshifumi Ogami In this paper, the mixing enhancement of a micromixer consisting of a step channel and a shuttlecock rotor suspended in the step is numerically analyzed. Asymptotic mixing performance is investigated as a function of Strouhal and Peclet numbers by particle tracking...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2010, 132(12): 121103.
Published Online: December 6, 2010
...Yanhui Wu; Wuli Chu; Haoguang Zhang; Qingpeng Li This paper presents numerical and experimental investigations about grooved casing treatment with the help of a high-speed small-scale compressor rotor. First, the numerical investigation seeks to offer a contribution of understanding the working...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2010, 132(11): 111101.
Published Online: November 18, 2010
...M. Pau; G. Paniagua Ensuring an adequate life of high pressure turbines requires efficient cooling methods such as rim seal flow ejection from the stator-rotor wheel space cavity interface, which prevents hot gas ingress into the rotor disk. The present paper addresses the potential to improve the...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. August 2010, 132(8): 084501.
Published Online: August 16, 2010
...Seong Yong Wie; Jae Hoon Lee; Jang Hyuk Kwon; Duck Joo Lee Rotor aerodynamics is governed by wake geometry and strength. However, rotor wake characteristics computed by the rotor computational fluid dynamics are not clearly described due to numerical dissipation. To overcome this numerical problem...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. July 2010, 132(7): 071102.
Published Online: July 8, 2010
...Bingwei Song; Hironori Horiguchi; Zhenyue Ma; Yoshinobu Tsujimoto This paper addresses the rotordynamic instability of an overhung rotor caused by a hydrodynamic moment due to whirling motion through the structural coupling between whirl and precession modes. First, the possibility of instability...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061105.
Published Online: June 23, 2010
... to the rotating cavitation is one type of self-excited vibrations arising from the coupling of cavitation instability and rotordynamics. 07 10 2008 17 03 2010 23 06 2010 23 06 2010 cavitation rotors shafts turbomachinery vibrations cavitating inducer rotating...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. March 2010, 132(3): 031301.
Published Online: March 17, 2010
... 03 2010 centrifuges drops flow separation rotational flow rotors two-phase flow rotational separation separation efficiency liquid drainage Condensed rotational separation (CRS) is a new centrifugal method for separating bulk mixtures of gases ( 1 2 3 4 ). The mixture...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2010, 132(2): 021101.
Published Online: February 3, 2010
...Stephen A. Huyer; Amanda Dropkin; James Dick; David Beal A computational study was performed to investigate a method to generate vehicle maneuvering forces from a propulsor alone. A ducted, preswirl propulsor was configured with an upstream stator row and downstream rotor. During normal operation...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2009, 131(8): 081101.
Published Online: July 7, 2009
... region are correlated with the specific end-plate design features, and their role in the creation of overall acoustic emissions is clarified. The tip-leakage flows of the fans are analyzed in terms of vortex structure, chordwise leakage flow, and loading distribution. Rotor losses are also investigated...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2009, 131(5): 051106.
Published Online: April 23, 2009
...A. J. Gannon; G. V. Hobson An investigation of the behavior of a transonic compressor rotor when operating close to stall is presented. The specific areas of interest are the behavior and location of low-frequency instabilities close to stall. In running close to stall, compressors can begin to...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2009, 131(5): 051101.
Published Online: April 1, 2009
... is placed in between the shaft of the pump and the impeller and corotates with the rotor system. A high accuracy is obtained due to the orthogonality of bridge positioning and the signal conditioning electronics embedded within the dynamometer. The suction flow distribution to the pump is adapted...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2009, 131(4): 041102.
Published Online: March 6, 2009
... and structural characteristics of the SRC are presented first. Then, the kinematic and force models are established for the key components—cylinder, sliding vane, and rotor. The velocity, acceleration, and force equations with shaft rotation angle are derived for each component. Based on the...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. January 2009, 131(1): 011101.
Published Online: November 26, 2008
... rotors by increasing the magnitude and width of the negative pressure pulse on the screen cylinder while at the same time reducing the magnitude of the positive pressure pulse on the screen cylinder. Too large an angle-of-attack or too much camber leads to separation of the flow over the foil and a loss...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2008, 130(11): 111303.
Published Online: September 23, 2008
... rotors vortices Current rocket propellant feed turbopumps often employ an inducer upstream of the centrifugal stage in order to avoid unacceptable cavitation, improve the suction performance, and reduce the propellant tank pressure and weight. The main purpose of inducers consists in...