An Experimental Investigation for Flow Past a Circular Cylinder With Rectangular Strips

2002 ◽  
Author(s):  
Chuan He ◽  
Tianyu Long ◽  
Mingdao Xin ◽  
Benjamin T. F. Chung
Keyword(s):  
Experimental Investigation ◽  
Fluid Flow ◽  
Circular Cylinder ◽  
Drag Coefficient ◽  
Experimental Results ◽  
Sharp Edge ◽  
Flow Past ◽  
Rectangular Strips

This paper reports an experimental investigation for fluid flow past a circular cylinder with two small rectangular strips and single sharp-edge strips on its surface. The experimental results reflected that different arrangements or dimensions of the strips produced significantly different effects on the flow. The forward step caused a stronger disturbance with a small increase in drag. The backward step arrangement softened the disturbance but reduced the drag coefficient by 33%.

Induced Separation and Vorticity Using Roughness in VIV of Circular Cylinders at 8×103 < Re < 2.0×105

2008 ◽  
Author(s):  
Michael M. Bernitsas ◽  
Kamaldev Raghavan ◽  
G. Duchene
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Fluid Flow ◽  
Circular Cylinder ◽  
Passive Control ◽  
Flow Characteristics ◽  
Grit Size ◽  
Strip Width ◽  
Circular Cylinders ◽  
Flow Past

Results of an experimental investigation on fluid flow past an elastically mounted circular cylinder with rectangular surface roughness strips are presented. Flow characteristics change depending on the strip width, roughness grit size, and location. Roughness size and distribution can be designed to enhance or reduce/suppress VIV amplitude and increase or reduce the range of synchronization, respectively. To the authors’ knowledge this is the first study in passive control of VIV using properly distributed roughness.

Effect of confinement on power-law fluid flow past a circular cylinder

2011 ◽  
Vol 51 (10) ◽  
pp. 2044-2065 ◽  
Author(s):  
M.K. Rao ◽  
Akhilesh K. Sahu ◽  
R.P. Chhabra
Keyword(s):  
Fluid Flow ◽  
Circular Cylinder ◽  
Power Law ◽  
Power Law Fluid ◽  
Flow Past

An Experimental Investigation of Flow Past a Smooth Circular Cylinder at the Sub-Critical Region

2002 ◽  
Author(s):  
Chuan He ◽  
Tianyu Long ◽  
Mingdao Xin ◽  
Benjamin T. F. Chung
Keyword(s):  
Experimental Investigation ◽  
Reynolds Number ◽  
Circular Cylinder ◽  
Critical Region ◽  
Algebraic Expression ◽  
Cylinder Surface ◽  
Local Pressure ◽  
Flow Past ◽  
Nadir Point ◽  
Experimental Findings

An experimental investigation for the incompressible flow past a smooth circular cylinder at the sub-critical region is presented in detail. A smooth circular cylinder is placed in a wind tunnel and the local pressure distribution on the cylinder surface is measured subtly. The Reynolds Number ranges from 104 to 8 × 104. The experimental data show that there exists a nadir point of the surface pressure in the front the across section of the cylinder and the pressure nadir position varies with the Reynolds number. It is found that this point tends to move forward of the cylinder as Reynolds number increases. Based on the present experimental findings, a simple algebraic expression describing the relationship between the location of the pressure’s nadir and Reynolds number is proposed.

Elastico-viscous fluid flow past a porous, circular cylinder.

AIAA Journal ◽  
1966 ◽  
Vol 4 (8) ◽  
pp. 1443-1445
Author(s):  
JYOTIRMOY SINHA ROY
Keyword(s):  
Fluid Flow ◽  
Circular Cylinder ◽  
Viscous Fluid ◽  
Viscous Fluid Flow ◽  
Flow Past

Note on the Flow past a Circular Cylinder

1935 ◽  
Vol 31 (4) ◽  
pp. 585-588
Author(s):  
L. Howarth
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Experimental Results ◽  
Turbulent Motion ◽  
Flow Past ◽  
Method Of Solution

Buri's method of solution of the equations of turbulent motion in a boundary layer has been used extensively in a previous paper. Since the results of that investigation have not been compared with experiment, nor has any other application of Buri's method been checked experimentally, it seems advisable to apply this method to a problem for which the experimental results are known.

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