On the vortex dynamics of flow past a sphere at Re = 3700 in a uniformly stratified fluid

2017 ◽  
Vol 29 (2) ◽  
pp. 020704 ◽  
Author(s):  
Karu Chongsiripinyo ◽  
Anikesh Pal ◽  
Sutanu Sarkar
Keyword(s):  
Vortex Dynamics ◽  
Stratified Fluid ◽  
Flow Past ◽  
Flow Past A Sphere

Flow past a sphere in density-stratified fluid

2004 ◽  
Vol 18 (2-4) ◽  
pp. 265-276 ◽  
Author(s):  
Sungsu Lee ◽  
Kyung-Soo Yang
Keyword(s):  
Stratified Fluid ◽  
Flow Past ◽  
Flow Past A Sphere

scholarly journals Numerical simulation of flow past a sphere in vertical motion within a stratified fluid

1999 ◽  
Vol 103 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Carlos R. Torres ◽  
José Ochoa ◽  
JoséE. Castillo ◽  
Hideshi Hanazaki
Keyword(s):  
Numerical Simulation ◽  
Vertical Motion ◽  
Stratified Fluid ◽  
Flow Past ◽  
Flow Past A Sphere

Variable viscosity effects for the steady flow past a sphere

2019 ◽  
Vol 31 (11) ◽  
pp. 113105
Author(s):  
Kostas D. Housiadas ◽  
Antony N. Beris
Keyword(s):  
Steady Flow ◽  
Variable Viscosity ◽  
Viscosity Effects ◽  
Flow Past ◽  
Flow Past A Sphere

Creeping Flow past a Sphere

2020 ◽  
pp. 117-122
Author(s):  
John Newman ◽  
Vincent Battaglia
Keyword(s):  
Creeping Flow ◽  
Flow Past ◽  
Flow Past A Sphere

Non-Newtonian flow past a sphere

1961 ◽  
Vol 16 (3-4) ◽  
pp. 231-241 ◽  
Author(s):  
John C. Slattery ◽  
R.Byron Bird
Keyword(s):  
Newtonian Flow ◽  
Flow Past ◽  
Flow Past A Sphere

Flow past a sphere of two co-axial supersonic streams

1973 ◽  
Vol 5 (5) ◽  
pp. 789-794
Author(s):  
K. G. Savinov
Keyword(s):  
Flow Past ◽  
Flow Past A Sphere

Regeneration of turbulent fluctuations in low-Froude-number flow over a sphere at a Reynolds number of 3700

2016 ◽  
Vol 804 ◽  
Author(s):  
Anikesh Pal ◽  
Sutanu Sarkar ◽  
Antonio Posa ◽  
Elias Balaras
Keyword(s):  
Reynolds Number ◽  
Froude Number ◽  
Qualitative Change ◽  
Turbulence Energy ◽  
Horizontal Shear ◽  
Near Wake ◽  
Turbulent Fluctuations ◽  
Flow Past ◽  
Low Froude Number ◽  
Flow Past A Sphere

Direct numerical simulations (DNS) are performed to study the behaviour of flow past a sphere in the regime of high stratification (low Froude number $Fr$). In contrast to previous results at lower Reynolds numbers, which suggest monotone suppression of turbulence with increasing stratification in flow past a sphere, it is found that, below a critical $Fr$, increasing the stratification induces unsteady vortical motion and turbulent fluctuations in the near wake. The near wake is quantified by computing the energy spectra, the turbulence energy equation, the partition of energy into horizontal and vertical components, and the buoyancy Reynolds number. These diagnostics show that the stabilizing effect of buoyancy changes flow over the sphere to flow around the sphere. This qualitative change in the flow leads to a new regime of unsteady vortex shedding in the horizontal planes and intensified horizontal shear which result in turbulence regeneration.

Flow Past a Sphere

2013 ◽  
pp. 159-182
Author(s):  
William E. Langlois ◽  
Michel O. Deville
Keyword(s):  
Flow Past ◽  
Flow Past A Sphere
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