The vortical flow in the tip region of a three-bladed rotor was examined using particle imaging velocimetry (PIV). The vortex forming at the tip of the un-ducted propeller was compared to the tip-leakage vortex of the ducted rotor. The planar flow fields were used to identify regions of concentrated vorticity and determine instantaneous vortex properties, revealing the presence of a primary tip-leakage vortex surrounded by a number of secondary vortices. Comparison between the ducted and un-ducted rotor indicated that the presence of the duct reduced the relative strength of the primary tip vortex, making its strength a smaller fraction of the overall shed circulation near the tip. The weaker tip-leakage vortex then became closer in strength to the other secondary vortices in the tip-flow region. However, for the rotor tip geometry considered here, the radius of the primary vortex core did not vary substantially between the ducted and un-ducted cases. The variability of the flow was larger for the ducted case, in terms of the primary vortex position, its identified circulation, core size, and inferred core pressure. This variability was also observed in the scaled velocity fluctuations near the core of the vortex.
Skip Nav Destination
ceccio@engin.umich.edu
Article navigation
July 2006
Technical Papers
Development of a Tip-Leakage Flow Part 2: Comparison Between the Ducted and Un-ducted Rotor
Ghanem F. Oweis,
Ghanem F. Oweis
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109-2121
Search for other works by this author on:
David Fry,
David Fry
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Search for other works by this author on:
Chris J. Chesnakas,
Chris J. Chesnakas
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Search for other works by this author on:
Stuart D. Jessup,
Stuart D. Jessup
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Search for other works by this author on:
Steven L. Ceccio
Steven L. Ceccio
Department of Mechanical Engineering,
ceccio@engin.umich.edu
University of Michigan
, Ann Arbor, MI 48109-2121
Search for other works by this author on:
Ghanem F. Oweis
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109-2121
David Fry
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Chris J. Chesnakas
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Stuart D. Jessup
Naval Surface Warfare Center
, Carderock Division, Code 5400, 9500 MacArthur Blvd., West Bethesda, MD 20817-5700
Steven L. Ceccio
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109-2121ceccio@engin.umich.edu
J. Fluids Eng. Jul 2006, 128(4): 765-773 (9 pages)
Published Online: March 2, 2006
Article history
Received:
January 15, 2004
Revised:
March 2, 2006
Connected Content
A companion article has been published:
Development of a Tip-Leakage Flow—Part 1: The Flow Over a Range of Reynolds Numbers
Citation
Oweis, G. F., Fry, D., Chesnakas, C. J., Jessup, S. D., and Ceccio, S. L. (March 2, 2006). "Development of a Tip-Leakage Flow Part 2: Comparison Between the Ducted and Un-ducted Rotor." ASME. J. Fluids Eng. July 2006; 128(4): 765–773. https://doi.org/10.1115/1.2201619
Download citation file:
Get Email Alerts
Cited By
Experimental and Numerical Investigation of Recirculation Structures in Isothermal Swirling Coaxial Jet
J. Fluids Eng (October 2022)
Local Entropy Generation Analysis for Cavitation Flow Within a Centrifugal Pump
J. Fluids Eng (October 2022)
Interfacial Characteristics of Power-Law Viscoelastic Fluid With Heat and Mass Transfer in Planar Configuration
J. Fluids Eng (October 2022)
Related Articles
Analysis of Vortical Flow Field in a Propeller Fan by LDV Measurements and LES—Part I: Three-Dimensional Vortical Flow Structures
J. Fluids Eng (December,2001)
Analysis of Vortical Flow Field in a Propeller Fan by LDV Measurements and LES—Part II: Unsteady Nature of Vortical Flow Structures Due to Tip Vortex Breakdown
J. Fluids Eng (December,2001)
Unsteady Vortex Flows Produced by Trailing Edge Articulation
J. Fluids Eng (March,2008)
Development of a Tip-Leakage Flow—Part 1: The Flow Over a Range of Reynolds Numbers
J. Fluids Eng (July,2006)
Related Proceedings Papers
Related Chapters
Fans and Air Handling Systems
Thermal Management of Telecommunications Equipment
Coupling a Numerical Optimization Technique with a Panel Method or a Vortex Lattice Method to Design Cavitating Propellers in Non-Uniform Inflows
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Numerical Study on the Effect of Turbulence and Cavitation Model for Propeller Induced Hull Pressure Fluctuation
Proceedings of the 10th International Symposium on Cavitation (CAV2018)