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Keywords: impellers
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Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111101.
Published Online: October 24, 2011
... in the predicted vortex in the impeller. The transient curve showing the relationship between the instantaneous flow coefficient and total pressure rise coefficient was analyzed and compared with the quasi-steady curve. The two curves had a crossover point when the stall just occurs in the impeller during...
Journal Articles
Publisher: ASME
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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. October 2011, 133(10): 101303.
Published Online: October 4, 2011
... (AOK TFR). The results show that pressure fluctuations at the impeller rotating frequency and some lower frequencies dominated in the semispiral suction chamber. Pressure fluctuations at the blade passing frequency, the impeller rotating frequency, and their harmonic frequencies were identified...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2011, 133(6): 061202.
Published Online: June 16, 2011
...Douglas Bohl; Akshey Mehta; Naratip Santitissadeekorn; Erik Bollt The flow field in a cylindrical container driven by a flat bladed impeller was investigated using particle image velocimetry (PIV). Three Reynolds numbers (0.02, 8, 108) were investigated for different impeller locations within...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Fluids Eng. March 2011, 133(3): 034502.
Published Online: March 15, 2011
... ), pp. 331 – 345 . 10.1002/fld.1650050404 Jansen , W. , and Kirschner , A. M. , 1974 , “ Impeller Blade Design Method for Centrifugal Compressors ,” Fluid Mechanics, Acoustics, and Design of Turbomachinery , NASA, SP-304, pp. 537 – 563 . Tan , C. S. , Hawthorne , W. R...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Fluids Eng. February 2011, 133(2): 024501.
Published Online: February 23, 2011
... 23 01 2011 23 02 2011 23 02 2011 blades hydraulic systems impellers inducer noncavitating head head curve singularity method hydraulic loss The inducer is a helical axial-flow impeller and often is installed in front of the impeller of a centrifugal or mixed...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. September 2010, 132(9): 091103.
Published Online: September 23, 2010
...Yu-Tai Lee The effect of a gap between an inlet duct and a rotating impeller in a centrifugal fan is often neglected in the impeller design calculations or design-related computational fluid dynamics (CFD) analyses. This leads to an arbitrary determination of the gap size for the final fan...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. September 2010, 132(9): 091101.
Published Online: September 3, 2010
...Semi Kim; Junyoung Park; Kukyoung Ahn; Jehyun Baek In centrifugal compressors, the diffuser and the volute have strong influences on the flow discharged from the impeller and thus also on the performance. In particular, a key parameter is the radial velocity at the volute inlet; it determines...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061104.
Published Online: June 15, 2010
...R. W. Westra; L. Broersma; K. van Andel; N. P. Kruyt Two-dimensional particle image velocimetry measurements and three-dimensional computational fluid dynamics (CFD) analyses have been performed on the steady velocity field inside the shrouded impeller of a low specific-speed centrifugal pump...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061103.
Published Online: June 15, 2010
...Brian de Souza; Andrew Niven; Richard McEvoy This contribution addresses volute design as applied to single-blade-impeller pumps. Traditionally, volute design for multiblade impeller pumps has been carried out using either the constant-velocity or constant-swirl methodologies. Here, the constant...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061301.
Published Online: May 19, 2010
...Rudolf Bachert; Bernd Stoffel; Matevž Dular The paper deals with unsteady effects of cavitation at the tongue of the volute of a centrifugal pump. For the investigations parts of the volute casing, including the tongue and the hub of the impeller, were made of acrylic glass. Experiments were...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051106.
Published Online: May 6, 2010
...C. Gómez; C. P. J. Bennington; F. Taghipour The hydrodynamics of stirred vessels with side-entering impellers, which are used in numerous process industries including petroleum, foods, and pulp and paper manufacturing, have received limited attention. In the present work, the flow in a reduced size...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051202.
Published Online: April 28, 2010
...David Greenblatt; Guy Arzuan An experimental investigation was undertaken as a proof-of-concept study for active separation control in a radial blower. Acoustic perturbations were introduced into the impeller housing of a small radial blower with fully stalled blades. Increases in the plenum...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. March 2010, 132(3): 031104.
Published Online: March 18, 2010
...Duccio Bonaiuti; Mehrdad Zangeneh; Reima Aartojarvi; Jonas Eriksson The present paper describes the parametric design of a mixed-flow water-jet pump. The pump impeller and diffuser geometries were parameterized by means of an inverse design method, while CFD analyses were performed to assess...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2010, 132(2): 021106.
Published Online: February 16, 2010
...Mihael Sekavčnik; Tine Gantar; Mitja Mori In this paper, we present an experimental and numerical investigation of a single-stage centripetal pump (SSCP). This SSCP is designed to operate in the pump regime, while forcing the working media through impeller-stator flow channels in the radial inward...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. July 2009, 131(7): 071102.
Published Online: June 22, 2009
... throughout the impeller and the volute. The analysis of both static and dynamic effects on the pump shaft has been carried out from the numerical calculation of the radial forces. The results have shown that the performance of the double suction centrifugal pump is suitable for typical design conditions...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2009, 131(5): 051101.
Published Online: April 1, 2009
... on the effect of a nonuniform suction velocity profile on performance of a mixed-flow pump and hydrodynamic forces on the impeller. In the experiments, a newly designed dynamometer is used, equipped with six full Wheatstone bridges of strain gauges to measure the six generalized force components. It is placed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2009, 131(2): 021103.
Published Online: January 15, 2009
... hydrosites is not economical. Therefore, the efficiency improvement of reverse pumps is essential. In this study, by focusing on a pump impeller, the shape of blades was redesigned to reach a higher efficiency in turbine mode using a gradient based optimization algorithm coupled by a 3D Navier–Stokes flow...