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Keywords: aerodynamics
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Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121402.
Published Online: December 23, 2011
.... Moreover, the axisymmetric circular test section was not intended to produce a wide range of controllable flow features (e.g. shear in multiple directions). 05 09 2010 19 10 2011 23 12 2011 23 12 2011 aerodynamics computational fluid dynamics flow control flow simulation...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121103.
Published Online: December 20, 2011
... mechanisms for the differences between the two approaches (quasi-steady and dynamic) and for the occurrence of hysteresis and phase-shift in the resulting pressure and aerodynamic force data. The memory effects of the flow and the inertia of the flow were found to be the most important causes...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121102.
Published Online: December 19, 2011
...Mehmet N. Tomac; Kevin Yugulis; James W. Gregory; James Loftus; Tony Ferrito This work develops an understanding of the flow mechanisms that induce vibrations on automotive side view mirrors. The unsteady nature of the flow over side view mirrors causes unsteady aerodynamic load distributions...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111104.
Published Online: November 8, 2011
..., and flow compressibility on the onset of stall. This approach also presents an analysis method that can be used to predict the stall of airfoils with alternative nose geometry. 16 01 2011 09 09 2011 09 09 2011 08 11 2011 08 11 2011 aerodynamics boundary layer turbulence...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111105.
Published Online: November 8, 2011
... 2011 08 11 2011 aerodynamics alumina ceramics flow simulation flow through porous media foams porosity silicon compounds viscosity pressure drop pore density dimensional analysis In recent decades, there have been advances in production of materials such as metal...
Journal Articles
Article Type: Technology Review
J. Fluids Eng. November 2011, 133(11): 114001.
Published Online: October 19, 2011
...Martin O. L. Hansen; Helge Aagaard Madsen The paper describes the development and description of the aerodynamic models used to estimate the aerodynamic loads on wind turbine constructions. This includes a status of the capabilities of computation fluid dynamics and the need for reliable airfoil...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111001.
Published Online: October 13, 2011
.... 2 Elofsson , P. , and Bannister , M. , 2002 , “ Drag Reduction Mechanisms Due to Moving Ground and Wheel Rotation in Passenger Cars ,” SAE Paper No. 2002-01-0531. 3 Cogotti , A. , 1983 , “ Aerodynamic Characteristics of Car Wheels: In Technological Advances in Vehicle Design...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2011, 133(10): 101101.
Published Online: October 4, 2011
... optimization process is conducted with three design variables defining stagger angles at the hub, mid-span, and tip, and the second is conducted with five design variables defining hub-to-tip ratio, hub cap installation distance, hub cap ratio, and the stagger angles at the mid-span and tip. Two aerodynamic...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2011, 133(8): 081101.
Published Online: August 16, 2011
... section wall configurations were investigated, namely, geometrically straight walls (GSW), aerodynamically straight walls (ASW), and streamlined walls (SLW). The results show that solid blockage effects are evident in cylinder surface pressure distributions for the GSW and ASW configurations, manifested...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. July 2011, 133(7): 071302.
Published Online: July 22, 2011
...Shun C. Yen; Yu F. Fei This study investigates the effects of Reynolds number, angle of attack, and winglet dihedral (δ) on the smoke-streak flow patterns, surface oil-flow configurations, and aerodynamic performance of the wingleted wings. The airfoil is NACA 0012 and the winglet dihedral varies...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. July 2011, 133(7): 074501.
Published Online: July 5, 2011
... as incompressible for practical engineering applications. This paper improves and extends previous studies on slip flow in noncircular microchannels. 03 08 2010 22 05 2011 05 07 2011 05 07 2011 aerodynamics compressible flow flow simulation microchannel flow Poiseuille flow slip...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2011, 133(6): 061102.
Published Online: June 15, 2011
...Graham Doig; Tracie J. Barber; Andrew J. Neely For inverted wings in close ground proximity, such as race car configurations, the aerodynamic ground effect can produce local velocities significantly greater than the freestream and the effects of compressibility may occur sooner than would...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041103.
Published Online: May 16, 2011
... that only steady-state simulations are considered herein, and that time-dependent transient studies of the vortex amplifier will be reported in a subsequent accompanying paper. 05 07 2010 03 02 2011 03 02 2011 16 05 2011 16 05 2011 aerodynamics computational fluid...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. March 2011, 133(3): 031103.
Published Online: March 16, 2011
... and modeling approaches used for these applications and to develop physical understanding of the aerodynamics of gear windage loss. Several spur gear geometries are considered, for which experimental data are available. Various canonical shrouding configurations and free spinning (no shroud) cases are studied...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021102.
Published Online: February 4, 2011
..., or serrations that have previously been used to reduce airfoil drag will also be considered. 06 06 2010 19 12 2010 04 02 2011 04 02 2011 aerodynamics aerospace components automotive components blades drag reduction fans Industrial fans are widely used for cooling...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2010, 132(12): 121102.
Published Online: December 3, 2010
... the stall inception was found to be 65.4% of the rotor speed, as observed from the unsteady pressure traces. 08 12 2009 27 10 2010 03 12 2010 03 12 2010 aerodynamics blades compressors fans flow measurement rotational flow turbomachinery wavelet transforms flow...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2010, 132(10): 101202.
Published Online: October 12, 2010
... 2010 aerodynamics flow simulation Navier-Stokes equations pipe flow propellants rocket engines rotational flow The substitution of hybrid propellants in propulsive applications is gradually gaining popularity as demonstrated in the effective use of a nitrous oxide/HTPB combination...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2010, 132(9): 091103.
Published Online: September 23, 2010
... 2010 23 09 2010 23 09 2010 aerodynamics blades computational fluid dynamics flow separation impact (mechanical) impellers jets pipe flow turbomachinery vortices For centrifugal turbomachinery, a gap exists between the nonrotating inlet duct and the rotating impeller...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2010, 132(8): 081401.
Published Online: August 26, 2010
...Alan A. Thrift; Scott J. Brumbaugh; Karen A. Thole; Atul Kohli While the measurement of drag and lift forces on a body in external flow is common practice, the same cannot be said for aerodynamic forces on bodies in internal flows. The inherent difficulty in making force measurements on a body...
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...