Rise of total pressure near the stagnation point on a sphere

AIAA Journal ◽  
2002 ◽  
Vol 40 ◽  
pp. 576-579
Author(s):  
J. C. Williams III
Keyword(s):  
Stagnation Point ◽  
Total Pressure

Rise of Total Pressure Near the Stagnation Point on a Sphere

AIAA Journal ◽  
2002 ◽  
Vol 40 (3) ◽  
pp. 576-579 ◽  
Author(s):  
James C. Williams
Keyword(s):  
Stagnation Point ◽  
Total Pressure

The Effect of Nonuniform Viscosity on Stagnation Point Pressure

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Stuart E. Norris
Keyword(s):  
Stagnation Point ◽  
Turbulent Flows ◽  
Total Pressure ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Stagnation Points ◽  
Eddy Viscosity Model ◽  
Point Pressure ◽  
High Reynolds ◽  
Stream Lines

For high Reynolds number flows the total pressure remains constant along stream lines. At low Reynolds numbers the total pressure decreases in a global sense due to the actions of viscosity, but it may increase locally in regions such as stagnation points. Previous studies have considered the case of constant viscosity flow. However, gradients in the effective viscosity can occur normal to the wall for the flow of lubricating oils, and for turbulent flows calculated using an eddy viscosity model. In this paper the effect of these viscosity gradients on the stagnation point pressure are examined.

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