Effect of rotational oscillation upon fluid forces about a circular cylinder

2003 ◽  
Vol 91 (5) ◽  
pp. 637-652 ◽  
Author(s):  
K Srinivas ◽  
N Fujisawa
Keyword(s):  
Circular Cylinder ◽  
Fluid Forces ◽  
Rotational Oscillation

Control of flow and fluid forces on a circular cylinder by rotational oscillation

2003 ◽  
Vol 2003.38 (0) ◽  
pp. 44-45
Author(s):  
Masaru UGATA ◽  
Nobuyuki FUJISAWA ◽  
Tsuyoshi TAKANO ◽  
Chuichi ARAKAWA
Keyword(s):  
Circular Cylinder ◽  
Fluid Forces ◽  
Rotational Oscillation ◽  
Control Of Flow

The Hydrodynamic Forces Acting on a Long Flexible Circular Cylinder Responding to VIV

2006 ◽  
Author(s):  
P. W. Bearman ◽  
F. J. Huera Huarte ◽  
J. R. Chaplin
Keyword(s):  
Circular Cylinder ◽  
Cross Flow ◽  
Element Model ◽  
Transverse Force ◽  
Diameter Ratio ◽  
Mass Ratio ◽  
Force Coefficients ◽  
Fluid Forces ◽  
Maximum Value ◽  
Vibration Prediction

Distributions of the fluid forces acting along a long flexible circular cylinder free to respond in-line and transverse to a stepped current are presented. Forces are calculated using a finite element model of the cylinder with measured responses providing the input. The length to diameter ratio of the model used was 469, the mass ratio was 3 and the Reynolds number could be varied up to maximum value of approximately 2.6 · 104. Fluid force coefficients for two cases are presented: in the first, the dominant modes are the 2nd cross-flow and the 4th in line. For the second case the leading modes are the 7th and 12th respectively. In general, transverse force coefficients and in-line drag coefficients are found to be larger than those measured for short sections of cylinder undergoing free and forced one and two-dimensional motions. It is anticipated that the results will be of value to developers of vortex-induced vibration prediction methods.

217 The Characteristics of Fluid Forces Acting on a Circular Cylinder with In-Line Vibrations

2006 ◽  
Vol 2006.45 (0) ◽  
pp. 73-74
Author(s):  
Tooru KINOSHITA ◽  
Hiroshi SAKAMOTO ◽  
Kazunori TAKAI ◽  
Yoshihiro OBATA
Keyword(s):  
Circular Cylinder ◽  
Fluid Forces
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