Physical mechanism of centrifugal-gravity wave resonant instability in azimuthally symmetric swirling flows

2017 ◽  
Vol 2 (10) ◽  
Author(s):  
Ron Yellin-Bergovoy ◽  
Eyal Heifetz ◽  
Orkan M. Umurhan
Keyword(s):  
Gravity Wave ◽  
Physical Mechanism ◽  
Swirling Flows ◽  
Resonant Instability

Power Fluctuations in Turbulent Swirling Flows

1996 ◽  
Vol 6 (7) ◽  
pp. 1099-1110 ◽  
Author(s):  
R. Labbé ◽  
J.-F. Pinton ◽  
S. Fauve
Keyword(s):  
Swirling Flows ◽  
Power Fluctuations

Time Dependances of the Resistance Coefficients of Polymeric Materials

INEOS OPEN ◽  
2020 ◽  
Vol 3 ◽  
Author(s):  
A. V. Matseevich ◽  
◽  
A. A. Askadskii ◽  
Keyword(s):  
Time Dependence ◽  
Physical Mechanism ◽  
Polymeric Materials ◽  
Resistance Coefficient ◽  
Constant Stress ◽  
Time To Rupture ◽  
Structure Sensitive ◽  
Material Durability ◽  
Resistance Coefficients ◽  
Extremal Character

One of the possible approaches to the analysis of a physical mechanism of time dependence for the resistance coefficients of materials is suggested. The material durability at the constant stress is described using the Zhurkov and Gul' equations and the durability at the alternating stress—using the Bailey criterion. The low strains lead to structuring of a material that is reflected in a reduction of the structure-sensitive coefficient in these equations. This affords 20% increase in the durability. The dependence of the resistance coefficient assumes an extremal character; the maximum is observed at the time to rupture lg tr ≈ 2 (s).

Influence of the upper atmosphere inhomogeneity on acoustic gravity wave propagation

2012 ◽  
Vol 18 (4(77)) ◽  
pp. 30-36 ◽  
Author(s):  
Y.I. Kryuchkov ◽  
◽  
O.K. Cheremnykh ◽  
A.K. Fedorenko ◽  
◽  
...  
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Upper Atmosphere ◽  
Acoustic Gravity Wave
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