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- Title
Variation in Measurements of Turbulence Intensity in Pipe Flow.
- Authors
Pepple, Mark A.; Curtis, Jennifer S.; Yurteri, Caner U.
- Abstract
Many well known single-phase axial turbulence profiles were compared with the present axial fluctuating velocity data obtained with LDV in water at Re>105 over the interval 0 ≤ r/R ≤ 0.6. The profiles differed in regard to fluid type (air and water), Re (5.3×103 ≤ Re ≤ 6.1x106), pipe diameter (25.4 mm ≤ D ≤ 254 mm), measurement technique, and scaling quantity. DNS results at Re 5.3×103 and 4.46×104 were included in the comparison. In general, the results showed a surprising amount of variation among literature values of axial fluctuating velocity, with those measurements obtained in water generally greater than those obtained in air. Additionally, profiles obtained in air with LDV are more flat than those obtained with a hot-wire. No Re dependence was found in air but dependence was observed in water.
- Subjects
TURBULENCE; PIPE flow; LASER Doppler velocimetry; HOT-wire anemometer; VELOCITY
- Publication
International Review of Chemical Engineering - Rapid Communications, 2010, Vol 2, Issue 3, p337
- ISSN
2035-1755
- Publication type
Article