Laser doppler measurements of flow in a rod bundle |
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Authors: | S. Neti |
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Affiliation: | Assistant Professor of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USA;Dean of Engineering, University of Houston, Houston, TX 77004, USA;Associate Professor of Mechanical Engineering, University of Kentucky, Lexington, KY 40506, USA |
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Abstract: | A two component laser doppler velocimeter with polarized beams and frequency shift was used to measure the turbulent flow field for axial flow between the rods of a nine rod, square pitch rod bundle. Parameters measured include mean axial and lateral velocities, turbulence intensities and the friction factor. The axial velocities for 10000 to 40000 Reynolds number are slightly higher than those reported by Rowe. The maximum lateral velocities measured are about 1% of the bulk velocity; somewhat larger than suggested by earlier authors. Axial and lateral turbulence intensities are larger than those in pipe flows. |
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