A flat jet in a granular bed of finite height |
| |
Authors: | Yu A Buevich N A Kolesnikova S M Éllengorn |
| |
Affiliation: | (1) Institute of Problems of Mechanics, Academy of Sciences of the USSR, Moscow;(2) Moscow Institute of Chemical Mechanical Engineering, USSR |
| |
Abstract: | The distribution of gas flows in the vicinity of the jet is discussed and the conditions of disruption of the static equilibrium of the bed, the formation and growth of a cavity, and the jet breakthrough of the bed are investigated qualitatively.Notation
a, b
functions calculated in 11]
- C, C
constants in (7)
- F
derivative of the complex potential
- f
function in (6)
- G
function defined in (19)
- H
dimensionless height of bed
- h
height of cavity
- k
coefficient introduced in (15)
- p, po
pressure inside bed and in cavity
- p
dimensionless pressure drop
- Q, q
dimensional and dimensionless jet flow rates
- q1, q2
critical values
- T
dimensionless height of cavity
- T0, T1 T 1, T2
characteristic values of T
-
u,v
filtration velocities
- u , u*
initial filtration velocity in the bed and minimum fluidization velocity
- uo
velocity scale introduced in (14)
- u *
velocity scale introduced in (14)
- u*
velocity of fictitious flow defined in (15)
- U
complex velocity
- Z=X+iY, z=x+iy
dimensionless coordinates
- z =x +iy
dimensional coordinates
-
coefficient of hydraulic resistance
-
parameter from (5)
-
specific weight of particles' material
-
porosity
- = +i
coordinates in the plane obtained from z=x+iy as a result a of conformai transformation
-
m
value of giving a minimum of the function G
-
f complex and real flow potentials
-
angle of internal friction
-
stream function
-
![zeta](/content/j318n74250262801/xxlarge950.gif)
angle of inclination of boundaries of the region of plastic flow to the vertical
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 37, No. 5, pp. 804–812, November, 1979. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|