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Keywords: fans
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Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021102.
Published Online: February 4, 2011
...David Greenblatt On the basis of a semi-empirical model, large Gurney flaps of 10%, 20%, and 30% of the fan blade chord length were tested in a specially designed ventilation fan facility. At the highest volumetric flowrates tested, the flapped blades all produced higher pressures than the baseline...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. December 2010, 132(12): 121102.
Published Online: December 3, 2010
...Pramod B. Salunkhe; A. M. Pradeep The present paper describes the use of Morlet wavelet transform in understanding the stall inception mechanism in a single stage axial flow fan. Unsteady pressure data from wall mounted sensors were used in the wavelet transforms. This paper was carried out under...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051202.
Published Online: April 28, 2010
... were found to be O(0.5), irrespective of the blade orientation or number of blades. Moreover, the maximum pressure rise was achieved with an investment of only 2% of the fan input power. Backward bladed impeller blades exhibited slightly larger increases in pressure coefficients when compared...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. November 2009, 131(11): 111104.
Published Online: October 23, 2009
...Matjaž Eberlinc; Brane Širok; Matevž Dular; Marko Hočevar Axial fans often show adverse flow conditions at the fan hub and at the tip of the blade. The modification of conventional axial fan blade is presented. Hollow blade was manufactured from the hub to the tip. It enables the formation of self...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. August 2009, 131(8): 081101.
Published Online: July 7, 2009
...Alessandro Corsini; Franco Rispoli; A. G. Sheard This study assesses the effectiveness of modified blade-tip configurations in achieving passive noise control in industrial fans. The concepts developed here, which are based on the addition of end-plates at the fan-blade tip, are shown to have...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2009, 131(6): 061103.
Published Online: May 14, 2009
...D. Sui; S. S. Wang; J. R. Mao; T. Kim; T. J. Lu The exit flow patterns of an axial flow fan widely used in electronics cooling are experimentally characterized both in free exit and in the presence of a flat impingement plate. The axial fan is rotated with 12.0 V input from a dc power supply...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. October 2008, 130(10): 101101.
Published Online: September 2, 2008
...David Quin; Ronan Grimes Microscale axial flow fans were investigated in response to the growing cooling requirements of the electronics industry. The two main challenges of this investigation were manufacture of a fully functional fan at the microscale, and performance reduction due to Reynolds...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. September 2008, 130(9): 091102.
Published Online: August 12, 2008
...Rafael Ballesteros-Tajadura; Sandra Velarde-Suárez; Juan Pablo Hurtado-Cruz Centrifugal fans are widely used in several applications, and in some cases, the noise generated by these machines has become a serious problem. The centrifugal fan noise is frequently dominated by tones at the blade...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. April 2008, 130(4): 041101.
Published Online: April 1, 2008
...Jesús Manuel Fernández Oro; Rafael Ballesteros-Tajadura; Eduardo Blanco Marigorta; Katia María Argüelles Díaz; Carlos Santolaria Morros This paper analyzes the structure of turbulence and secondary flows at the exit of an axial flow fan with variable pitch blades. The influence of changing...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. June 2007, 129(6): 764–772.
Published Online: January 2, 2007
...D. R. Neal; J. F. Foss An experimental investigation of an aerodynamic shroud applied to an axial ventilation fan system is reported. The aerodynamic shroud consists of a pressurized plenum and Coanda attachment surface, which also serves as the shroud for the fan. This combination delivers...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. July 2006, 128(4): 838–846.
Published Online: December 6, 2005
...Gianluca Iaccarino; Stéphane Moreau The Cartesian incompressible RANS solver with immersed boundaries, IBRANS , recently developed at Stanford, has been extended to include conjugate heat transfer modeling and used for the simulation of the electrical motor of an automotive engine cooling fan...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2006, 128(2): 332–340.
Published Online: September 19, 2005
...S. C. Yen; Frank K. T. Lin Flow fields near the exit and the global performance parameters of the various types of axial flow fans are studied with Particle Image Velocimetry and a standard AMCA 210 flow bench. The fans used in this study included the shrouded, shroudless, and winglet-blade types...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2006, 128(2): 359–369.
Published Online: September 6, 2005
...Rafael Ballesteros-Tajadura; Sandra Velarde-Suárez; Juan Pablo Hurtado-Cruz; Carlos Santolaria-Morros In this work, a numerical model has been applied in order to obtain the wall pressure fluctuations at the volute of an industrial centrifugal fan. The numerical results have been compared...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. May 2005, 127(3): 495–502.
Published Online: March 7, 2005
...Sofiane Khelladi; Smaïne Kouidri; Farid Bakir; Robert Rey In order to better understand the behavior of the fluid flow in vaned centrifugal fans, theoretical and experimental work has been carried out on unsteady three-dimensional (3D) flows. Particular attention is given to the flows located...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2005, 127(2): 299–307.
Published Online: December 28, 2004
...Xiaocheng Zhu; Wanlai Lin; Zhaohui Du The tip leakage flow in an axial ventilation fan with various tip clearances is investigated by experimental measurement and numerical simulation. For a low-rotating-speed ventilation fan with a large tip clearance, both experimental measurement and numerical...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2005, 127(2): 322–329.
Published Online: October 16, 2004
...C.-M. Jang; D. Sato; T. Fukano The flow characteristics in the blade passage and in the wake region of a low-speed axial flow fan have been investigated by experimental analysis using a rotating hot-wire sensor and a five-hole probe for design and off-design operating conditions. The results show...