scholarly journals Oscillatory Flow in Curved Pipes. 4th Report. Velocity Distribution in Entrance Region.

1994 ◽  
Vol 60 (569) ◽  
pp. 63-70 ◽  
Author(s):  
Masaru Sumida ◽  
Kouzou Sudou
Keyword(s):  
Velocity Distribution ◽  
Oscillatory Flow ◽  
Entrance Region ◽  
Curved Pipes

A theoretical and experimental study of the velocity distribution and transition to turbulence in free oscillatory flow

1975 ◽  
Vol 70 (1) ◽  
pp. 59-79 ◽  
Author(s):  
Claire Clarion ◽  
Robert Pelissier
Keyword(s):  
Velocity Distribution ◽  
Turbulent Flows ◽  
Oscillatory Flow ◽  
Axial Flow ◽  
Transition To Turbulence ◽  
Similarity Parameter ◽  
Flow Measurements ◽  
Shaped Tube ◽  
Constant Temperature Anemometer ◽  
Hot Film

The free oscillatory flow of a viscous fluid in a U-shaped tube is considered. A theoretical analysis (in which an axial flow is assumed and the start-up of the column is taken into account) shows, depending on the value of the similarity parameter γ, various regimes of the flow. Measurements of the velocity distribution are made using hot-film velocity probes, operated with a constant-temperature anemometer, and visualizations of the flow are performed. Experimental results are in good agreement with theoretical ones when the flow is laminar, and show the possible existence of turbulent flows. Critical values, at which the flow is disturbed over a more or less extended range of the successive oscillations, are determined for the similarity parameters γ and h0/R.

scholarly journals A Study of Oscillatory Flow in Curved Pipes : 2nd Report, Axial Velocity Profile

1985 ◽  
Vol 28 (245) ◽  
pp. 2644-2651
Author(s):  
Kouzou SUDOU ◽  
Masaru SUMIDA ◽  
Toshihiro TAKAMI ◽  
Ryuichiro YAMANE
Keyword(s):  
Velocity Profile ◽  
Axial Velocity ◽  
Oscillatory Flow ◽  
Curved Pipes ◽  
Axial Velocity Profile
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