9.4: Nomenclature Comparisons
- Page ID
- 32513
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CD |
Particle drag coefficient |
- |
CL |
Lift coefficient |
- |
Cvt |
Delivered (transport) volumetric concentration |
- |
Cvs |
Spatial volumetric concentration |
- |
Cvb |
Spatial volumetric concentration bed (1-n) |
- |
Cx |
Durand & Condolios reversed particle Froude number |
- |
d |
Particle diameter |
m |
dm |
Mean particle diameter Fuhrboter |
m |
d50 |
Particle diameter with 50% passing |
m |
Dp |
Pipe diameter |
m |
Erhg |
Relative excess hydraulic gradient |
- |
fl |
Fanning friction factor liquid |
- |
fm |
Fanning friction factor mixture |
- |
FL |
Lift force on particle |
N |
FL |
Durand & Condolios LDV Froude number |
- |
FW |
Submerged weight of particle |
N |
Fr |
Froude number |
- |
g |
Gravitational constant 9.81 m/s2 |
m/s2 |
il |
Pure liquid hydraulic gradient |
m/m |
im |
Mixture hydraulic gradient |
m/m |
K |
Durand & Condolios constant |
- |
K1 |
Newitt constant |
- |
ΔL |
Pipe length |
m |
LR |
Lift force to submerged weight ratio |
- |
M |
Power Wilson heterogeneous model |
- |
n |
Porosity |
- |
Δpl |
Pressure loss liquid |
kPa |
Δpm |
Pressure loss mixture |
kPa |
R |
Stratification ratio |
- |
Re |
Reynolds number |
- |
Rsd |
Relative submerged density |
- |
Sk |
Fuhrboter particle coefficient |
m/s |
u* |
Friction velocity |
- |
vls |
Line speed |
m/s |
vls,hh |
Intersection velocity heterogeneous-homogeneous regimes |
m/s |
vls,ldv |
Limit Deposit Velocity |
m/s |
vmin |
Minimum hydraulic gradient line speed Jufin-Lopatin |
m/s |
vsl |
Slip velocity |
m/s |
vt |
Terminal settling velocity particle |
m/s |
αδv=d |
Influence factor thickness viscous sub layer |
- |
α1a |
Proportionality factor thickness viscous sub layer |
- |
α1b |
Offset factor thickness viscous sub layer |
- |
αHe=Ho |
Influence factor intersection heterogeneous – homogeneous regimes |
- |
α2a |
Proportionality factor intersection heterogeneous – homogeneous regimes |
- |
α2b |
Offset factor intersection heterogeneous – homogeneous regimes |
- |
αLR=1 |
Influence factor lift ratio equals 1 |
- |
α3a |
Proportionality factor lift ratio equals 1 |
- |
α3b |
Offset factor lift ratio equals 1 |
- |
β |
Richardson & Zaki hindered settling power |
- |
δv |
Viscous sub layer thickness |
m |
δv,hh |
Viscous sub layer thickness at intersection heterogeneous-homogeneous regimes |
m |
ε |
Pipe wall roughness |
- |
κC |
Concentration eccentricity factor |
- |
λl |
Darcy Weisbach friction factor liquid |
- |
λm |
Darcy Weisbach friction factor mixture |
- |
μsf |
Sliding friction factor |
- |
ρl |
Density liquid |
ton/m3 |
ρs |
Density solid |
ton/m3 |
\(\ v_{\mathrm{l}}\) |
Kinematic viscosity liquid |
m2/s |
Φ |
Durand & Condolios parameter |
- |
ψ |
Durand & Condolios parameter |
- |
ψ* |
Jufin-Lopatin particle Froude number |
- |
ζ |
Fit function Fuhrboter |
- |
Ct |
The Cát number (sand grains) |
- |
Thfv |
The Thủy number (water) based on friction velocity |
- |
La |
The Lắng number (sediment) |
- |