Hydrodynamic instabilities in the developing region of an axially rotating pipe flow

2015 ◽  
Vol 47 (3) ◽  
pp. 035514 ◽  
Author(s):  
A Miranda-Barea ◽  
C Fabrellas-García ◽  
L Parras ◽  
C del Pino
Keyword(s):  
Pipe Flow ◽  
Hydrodynamic Instabilities ◽  
Developing Region ◽  
Rotating Pipe Flow

Experimental evidence of convective and absolute instabilities in rotating Hagen–Poiseuille flow

2013 ◽  
Vol 716 ◽  
Author(s):  
K. Shrestha ◽  
L. Parras ◽  
C. Del Pino ◽  
E. Sanmiguel-Rojas ◽  
R. Fernandez-Feria
Keyword(s):  
Experimental Evidence ◽  
Poiseuille Flow ◽  
Pipe Flow ◽  
Reynolds Numbers ◽  
Hydrodynamic Instabilities ◽  
Theoretical Predictions ◽  
Rotating Pipe Flow ◽  
Theoretical Results ◽  
Good Agreement ◽  
Swirl Parameter

AbstractExperimental results for instabilities present in a rotating Hagen–Poiseuille flow are reported in this study through fluid flow visualization. First, we found a very good agreement between the experimental and the theoretical predictions for the onset of convective hydrodynamic instabilities. Our analysis in a space–time domain is able to obtain quantitative data, so the wavelengths and the frequencies are also estimated. The comparison of the predicted theoretical frequencies with the experimental ones shows the suitability of the parallel, spatial and linear stability analysis, even though the problem is spatially developing. Special attention is focused on the transition from convective to absolute instabilities, where we observe that the entire pipe presents wavy patterns, and the experimental frequencies collapse with the theoretical results for the absolute frequencies. Thus, we provide experimental evidence of absolute instabilities in a pipe flow, confirming that the rotating pipe flow may be absolutely unstable for moderate values of Reynolds numbers and low values of the swirl parameter.

Modeling near-wall effects in axially rotating pipe flow by elliptic relaxation

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 1164-1170
Author(s):  
B. A. Pettersson ◽  
H. I. Andersson ◽  
A. S. Brunvoll
Keyword(s):  
Pipe Flow ◽  
Wall Effects ◽  
Elliptic Relaxation ◽  
Rotating Pipe Flow ◽  
Near Wall

Turbulence Statistics in a Fully Developed Rotating Pipe Flow

2005 ◽  
Vol 12 (3) ◽  
pp. 273-288 ◽  
Author(s):  
A. A. Feiz ◽  
M. Ould-Rouis ◽  
G. Lauriat
Keyword(s):  
Pipe Flow ◽  
Turbulence Statistics ◽  
Rotating Pipe Flow

Multiple bifurcation of rotating pipe flow

1991 ◽  
Vol 3 (2) ◽  
pp. 61-77 ◽  
Author(s):  
Alex Mahalov ◽  
Sidney Leibovich
Keyword(s):  
Pipe Flow ◽  
Rotating Pipe Flow

Structure-based turbulence model: Application to a rotating pipe flow

2002 ◽  
Vol 14 (4) ◽  
pp. 1523-1532 ◽  
Author(s):  
S. V. Poroseva ◽  
S. C. Kassinos ◽  
C. A. Langer ◽  
W. C. Reynolds
Keyword(s):  
Turbulence Model ◽  
Pipe Flow ◽  
Model Application ◽  
Rotating Pipe Flow

The counter-rotating core of a swirling turbulent jet issued from a rotating pipe flow

2004 ◽  
Vol 16 (9) ◽  
pp. L71-L73 ◽  
Author(s):  
Luca Facciolo ◽  
P. Henrik Alfredsson
Keyword(s):  
Pipe Flow ◽  
Turbulent Jet ◽  
Rotating Pipe Flow
Sign in / Sign up

Export Citation Format

Share Document