Mass transfer of particles located on the flow axis at large peclet number

1977 ◽  
Vol 12 (2) ◽  
pp. 218-226 ◽  
Author(s):  
Yu. P. Gupalo ◽  
A. D. Polyanin ◽  
Yu. S. Ryazantsev
Keyword(s):  
Mass Transfer ◽  
Peclet Number ◽  
Flow Axis ◽  
Péclet Number ◽  
Large Peclet Number

scholarly journals The drag of a body moving transversely in a confined stratified fluid

1970 ◽  
Vol 43 (2) ◽  
pp. 407-418 ◽  
Author(s):  
M. R. Foster ◽  
P. G. Saffman
Keyword(s):  
Peclet Number ◽  
Slow Motion ◽  
Shear Layers ◽  
Stratified Fluid ◽  
Rotating Fluid ◽  
Péclet Number ◽  
Fluid Layers ◽  
Number Problem ◽  
Number Flow ◽  
Large Peclet Number

The slow motion of a body through a stratified fluid bounded laterally by insulating walls is studied for both large and small Peclet number. The Taylor column and its associated boundary and shear layers are very different from the analogous problem in a rotating fluid. In particular, the large Peclet number problem is non-linear and exhibits mixing of statically unstable fluid layers, and hence the drag is order one; whereas the small Peclet number flow is everywhere stable, and the drag is of the order of the Peclet number.

Concentration Distribution in the Wake of a Plane Surface Buried in a Porous Media in Alignment with the Flow Direction

2009 ◽  
Vol 283-286 ◽  
pp. 553-558
Author(s):  
João M.P.Q. Delgado ◽  
M. Vázquez da Silva
Keyword(s):  
Mass Transfer ◽  
Peclet Number ◽  
Numerical Solutions ◽  
Plane Surface ◽  
Flow Direction ◽  
Mathematical Expression ◽  
Mass Conservation ◽  
Mass Transfer Process ◽  
Packed Bed ◽  
Péclet Number

The present work describes the mass transfer process between a moving fluid and a slightly soluble flat surface buried in a packed bed of small inert particles with uniform voidage, by both advection and diffusion. Numerical solutions of the differential equation describing solute mass conservation were undertaken to obtain the concentration profiles, for each concentration level, the width and downstream length of the corresponding contour surface and the mass transfer flux was integrated to give the Sherwood number as a function of Peclet number. A mathematical expression that relates the dependence with the Peclet number is proposed to describe the approximate size of the diffusion wake downstream of the reactive solid mass.

Sedimentation of charged particles at large péclet number

2004 ◽  
Vol 2 (6) ◽  
pp. 253-255
Author(s):  
Lianzhong Zhang ◽  
Chenbing Zhang ◽  
Wen Liu ◽  
Yizhi Ren
Keyword(s):  
Peclet Number ◽  
Charged Particles ◽  
Péclet Number ◽  
Large Peclet Number
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