Measurements of three components of mean velocity and simultaneous time-resolved measurements of axial and vertical turbulent velocities and their cross moment were made at three perpendicular planes slightly upstream of the corner and in the downstream interaction region of a cylinder-flat plate junction with and without an upstream circular manipulator. The circular manipulator was a smooth circular cylinder of 1.25 mm diameter, which was placed upstream of the cylinder at X/D = 1.2, within the boundary layer above the flat plate surface. Results show that when the manipulator is in place, there is a decrease in the axial mean velocity and increases in the axial mean squared turbulent velocity and turbulent shear stress at the first plane. There is an expanded region of secondary flow with reduced circulation, indicating that the manipulator has reduced the strength of the horseshoe vortex in this region.
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ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
July 6–10, 2003
Honolulu, Hawaii, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3697-5
PROCEEDINGS PAPER
Effects of an Upstream Circular Manipulator on the Flow Past a Cylinder-Flat Plate Junction
Alan Dow,
Alan Dow
California State University at Long Beach, Long Beach, CA
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George Elizarraras,
George Elizarraras
California State University at Long Beach, Long Beach, CA
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Hamid R. Rahai,
Hamid R. Rahai
California State University at Long Beach, Long Beach, CA
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Hamid Hefazi
Hamid Hefazi
California State University at Long Beach, Long Beach, CA
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Alan Dow
California State University at Long Beach, Long Beach, CA
George Elizarraras
California State University at Long Beach, Long Beach, CA
Hamid R. Rahai
California State University at Long Beach, Long Beach, CA
Hamid Hefazi
California State University at Long Beach, Long Beach, CA
Paper No:
FEDSM2003-45456, pp. 1503-1508; 6 pages
Published Online:
February 4, 2009
Citation
Dow, A, Elizarraras, G, Rahai, HR, & Hefazi, H. "Effects of an Upstream Circular Manipulator on the Flow Past a Cylinder-Flat Plate Junction." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 1503-1508. ASME. https://doi.org/10.1115/FEDSM2003-45456
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