Étude de formation de vortex au voisinage de l'aspiration verticale inversée dans un puits de pompage

1983 ◽  
Vol 10 (3) ◽  
pp. 369-383
Author(s):  
Tilena Kougnima ◽  
René Kahawita
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Laboratory Investigation ◽  
Relative Position ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Inertia Forces

The purpose of the laboratory investigation reported here has been to study the conditions under which vortices appear in the free surface flow upstream of a vertically inverted intake in a circular sump. The influence of geometry, approach conditions, size, and relative position of the intake in the sump has been studied. The effect of viscosity, surface tension, and inertia forces on the formation of vortices has been examined. A discussion of the results and the principal conclusions drawn permit certain recommendations to be made at the conceptual stage of pumping pits.

Two methods of surface tension treatment in free surface flow simulations

2018 ◽  
Vol 86 ◽  
pp. 236-242 ◽  
Author(s):  
Kirill D. Nikitin ◽  
Kirill M. Terekhov ◽  
Yuri V. Vassilevski
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Flow Simulations

scholarly journals The effect of surface tension on free surface flow induced by a point sink in a fluid of finite depth

2017 ◽  
Vol 156 ◽  
pp. 526-533
Author(s):  
G.C. Hocking ◽  
H.H.N. Nguyen ◽  
T.E. Stokes ◽  
L.K. Forbes
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Free Surface Flow ◽  
Finite Depth ◽  
Surface Flow ◽  
Effect Of Surface

A new cooling concept of free surface flow balanced with surface tension for FFHR

2003 ◽  
Vol 65 (3) ◽  
pp. 381-385 ◽  
Author(s):  
Tomoaki Kunugi ◽  
Youji Matsumoto ◽  
Akio Sagara
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow

scholarly journals THE EFFECT OF SURFACE TENSION ON FREE-SURFACE FLOW INDUCED BY A POINT SINK

2016 ◽  
Vol 57 (4) ◽  
pp. 417-428
Author(s):  
G. C. HOCKING ◽  
H. H. N. NGUYEN ◽  
L. K. FORBES ◽  
T. E. STOKES
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Axisymmetric Flow ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Limiting Factor ◽  
Inviscid Fluid ◽  
Steady Solutions ◽  
Determining Factor ◽  
Effect Of Surface

The steady, axisymmetric flow induced by a point sink (or source) submerged in an inviscid fluid of infinite depth is computed and the resulting deformation of the free surface is obtained. The effect of surface tension on the free surface is determined and is the new component of this work. The maximum Froude numbers at which steady solutions exist are computed. It is found that the determining factor in reaching the critical flow changes as more surface tension is included. If there is zero or a very small amount of surface tension, the limiting factor appears to be the formation of small wavelets on the free surface; but, as the surface tension increases, this is replaced by a tendency for the lowest point on the free surface to descend sharply as the Froude number is increased.

Sign in / Sign up

Export Citation Format

Share Document