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Keywords: propulsion
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Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. August 2011, 133(8): 081105.
Published Online: September 2, 2011
... solution. Therefore, when extending the solution to three dimensions, only two models were created: one for the stator and one for the rotor. By using the same iterative approach to coupling the rotor and stator models detailed earlier, the advance ratio for self-propulsion was found to be 1.60, which...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051204.
Published Online: June 7, 2011
...Fei Zheng; Andrey V. Kuznetsov; William L. Roberts; Daniel E. Paxson For many propulsion devices, the thrust may be augmented considerably by adding a passive ejector, and these devices are especially attractive for unsteady propulsion systems such as pulse detonation engines and pulsejets...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041102.
Published Online: May 12, 2011
... was produced with a duct that produced zero mean flow acceleration. Ducted designs generating accelerating or decelerating flow increased drag. However, propulsive efficiency based exclusively on blade thrust and torque was significantly increased for accelerating flow through the duct and reduced...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. December 2010, 132(12): 121302.
Published Online: December 29, 2010
...S. Gowing; T. Mori; S. Neely Air-augmented waterjets derive their propulsion from compressed gas mixed directly into the main flow. The gas bubbles expand as the mixture passes through the pressure gradient of the convergent nozzle, and energy is imparted to the water from the air in a complex...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. October 2010, 132(10): 101103.
Published Online: October 20, 2010
... the ship model is at the self-propulsion point, the difference between EFD R X , sinkage, and trim and CFD C T X , sinkage, and trim provides an assessment of the capability of the CFD waterjet model. Simulations and comparisons with EFD are also done for the bare hull condition...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. April 2010, 132(4): 041101.
Published Online: March 29, 2010
...Kideok Ro This study was conducted in an attempt to improve the hydrodynamic performance of a Weis-Fogh type ship propulsion mechanism by installing a spring to the wing so that the opening angle of the wing can be changed automatically. With the prototype design, the average thrust coefficient...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2010, 132(2): 021101.
Published Online: February 3, 2010
... as the program manager and the Office of Naval Research University Laboratory Initiative Program under Contract No. N0001408WX20425, with Dr. Kam Ng as the program sponsor. Roddy , R. F. , 2003 , “ Investigation of the Resistance, Propulsion, Stability and Control Characteristics of the NUWC/ARL...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. October 2008, 130(10): 101102.
Published Online: September 8, 2008
... earth-fixed reference frame, and ramping up the ship speed slowly such that the time derivatives become negligible and the local solution corresponds to a quasi steady-state. The procedure is used for the computation of resistance and propulsion curves, in both cases allowing for dynamic calculation...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. May 2006, 128(3): 481–487.
Published Online: December 12, 2005
...Kideok Ro; Baoshan Zhu; Hokeun Kang The velocity and pressure field of a ship’s Weis-Fogh-type propulsion mechanism are studied in this paper using an advanced vortex method. The wing (NACA0010 airfoil) and channel are approximated by source and vortex panels, and free vortices are introduced away...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2003, 125(2): 283–292.
Published Online: March 27, 2003
... instability propulsion In devices such as pumps, turbines, and marine propellers, cavitation has many adverse effects including material erosion and performance degradation. In addition, it can give rise to instabilities that do not occur in single phase flow. For example, high-speed turbopumps often...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. June 2001, 123(2): 311–319.
Published Online: January 31, 2001
... separation propulsion marine vehicles boundary-elements methods numerical analysis Accurate predictions of the extent of sheet cavitation and the pressure distribution on the blade are crucial in the design and assessment of marine propulsors. Recent advancements in the propulsor design industry...
Journal Articles
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. September 2000, 122(3): 614–618.
Published Online: March 13, 2000
...Motomu Nakashima, Research Associate; Kyosuke Ono, Professor In our previous paper, we proposed a numerical method based on the discrete vortex method for a bending propulsion mechanism of fish or cetaceans in water, and we demonstrated its validity by comparing the results with an experiment using...
Journal Articles
Promode R. Bandyopadhyay, Mechanical Engineer, Fellow ASME, John M. Castano, Mechanical Engineer, William H. Nedderman, Industrial Designer, Martin J. Donnelly, Mechanical Engineer,
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. June 2000, 122(2): 219–238.
Published Online: December 8, 1999
... velocimetry maps of vorticity-velocity vectors in the axial and cross-stream planes of the near-wake, as well as dye flow visualization. The mechanism of flapping foil propulsion and maneuvering is much richer than reported before. They can be classified as natural or forced. This work is of the latter type...
Journal Articles
F. S. Alvi, Assistant Professor,, P. J. Strykowski, Professor,, A. Krothapalli, Professor,, D. J. Forliti, Graduate Research Assistant,
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. March 2000, 122(1): 3–13.
Published Online: December 7, 1999
... flow control jets aircraft control propulsion nozzles fluidics The ability to redirect the thrust of an aircraft provides the potential for a vertical or lateral force which may be used, particularly at low speeds, to augment the lift force generated by the wings and quickly point the nose...
Journal Articles
H. Kagemoto, Professor, M. J. Wolfgang, Research Engineer, D. K. P. Yue, Professor, M. S. Triantafyllou, Professor
Journal:
Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. June 2000, 122(2): 239–253.
Published Online: December 7, 1999
..., 1998; revised manuscript received December 7, 1999. Associate Technical Editor: P. R. Bandyopadhyay. 19 February 1998 07 December 1999 biomechanics propulsion vortices wakes flow simulation robots Reported outstanding swimming performance from live fish has sparked...