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Abbreviations
- b :
-
dimensionless shear rate [Eq. (6.11)]
- C :
-
cos θ
- c :
-
cos φ
- C m :
-
cos mφ
- F :
-
probability density in position-velocity space
- F i :
-
force on i th bead through the connector
- F (c) :
-
tension in the connector of the dumbbell
- H :
-
Hooke law constant for a spring
- h :
-
function defined in Eq. (25.4)
- i :
-
\(\sqrt { - 1}\)
- j :
-
iλω
- J :
-
normalization constant defined in Eq. (3.14)
- J e :
-
equilibrium shear compliance [Eq. (13.3)]
- k :
-
Boltzmann constant
- L :
-
distance between bead centers in a rigid dumbbell
- M :
-
molecular weight
- m :
-
mass of a bead of the dumbbell
- Ñ :
-
Avogadro's number
- n :
-
normal unit vector
- n 0 :
-
number density of dumbbell
- P m n :
-
spherical harmonics [Eq. (5.5)]
- p :
-
thermodynamic pressure
- Q :
-
any function of R
- r :
-
position vector for center of mass of dumbbell
- r i :
-
position vector for i th bead (with coordinates x x , y i , z i )
- R :
-
orientation vector with components X, Y, Z (= r 2 − r 1)
- R :
-
separation between beads of dumbbell (= |R|)
- R :
-
gas constant in Eq. (6.11)
- S :
-
area of surface in Eqs. (4.11) and (4.12)
- S :
-
sin θ
- s :
-
sin φ
- s m :
-
sin mφ
- T :
-
absolute temperature
- t :
-
time
- v :
-
local fluid velocity
- v′ :
-
perturbation velocity (§ 25)
- x j :
-
mole fraction of j th species [Eq. (26.1)]
- x i , y i , z i :
-
components of r i
- X, Y, Z :
-
components of R
- β :
-
secondary normal stress function [Eq. (6.3)]
- β 0 :
-
secondary normal stress function at zero shear rate
- Γ :
-
gamma function
- \(\dot \gamma \) :
-
rate of deformation tensor [after Eq. (3.1)]
- γ ∞ :
-
ultimate shear recovery [Eq. (12.1)]
- γ :
-
infinitesimal strain
- δ :
-
unit tensor
- δ :
-
Dirac delta function
- δ R :
-
unit vector in radial direction
- δ i :
-
unit vector in i th Cartesian direction
- ξ :
-
friction coefficient of a bead
- η :
-
viscosity function in Eq. (6.1) (non-Newtonian viscosity)
- η s :
-
solvent viscosity
- η 0 :
-
zero shear rate viscosity
- [η]:
-
intrinsic viscosity [Eq. (6.9)]
- [η]0 :
-
zero-shear-rate intrinsic viscosity
- η*:
-
complex viscosity (η′ − iη″)
- \(\bar \eta\) :
-
elongational viscosity
- θ :
-
angle down from z-axis in spherical coordinates
- θ :
-
primary normal stress function [Eq. (6.2)]
- θ 0 :
-
primary normal stress function at zero shear rate
- κ :
-
tensor specifying the homogeneous velocity field [Eq. (3.1)]
- κ :
-
shear rate in shear flow
- \(\bar \kappa\) :
-
elongational rate in elongational flow
- Λ :
-
operator in Eq. (5.1)
- λ 1 :
-
time constant for Hookean dumbbell [Eq. (4.24)]
- λ :
-
time constant for rigid dumbbell [Eq. (5.1)]
- λ h :
-
time constant for rigid dumbbell with hydrodynamic interaction [before Eq. (25.15)]
- λ j :
-
time constant defined after Eq. (26.2)
- Ξ :
-
probability density in velocity space [Eq. (4.2)]
- π :
-
pressure tensor (total stress tensor)
- ϱ :
-
density of fluid
- τ :
-
stress tensor (or extra stress tensor)
- τ s :
-
solvent contribution to stress tensor [Eq. (4.1)]
- τ p :
-
polymer contribution to stress tensor [Eq. (4.1)] ( = τ (b) p + τ (c) p )
- Ψ :
-
geometrical ratio in § 21
- φ :
-
angle about the z-axis in spherical coordinates
- ψ :
-
probability density for two beads
- ψ :
-
probability density for internal configuration of a dumbbell
- ψ′ :
-
probability density for orientation of a rigid dumbbell [see Eq. (3.13 a)]
- ψ j :
-
expansion functions in Eq. (6.4)
- Ω :
-
Oseen tensor in § 25
- Ω :
-
angular velocity in § 21
- Ω :
-
operator in Eq. (5.1)
- Ω e :
-
operator in Eq. (15.1)
- ω :
-
frequency
- ω :
-
vorticity tensor [Eq. (20.3)]
- ∇ :
-
nabla operator
- \(\frac{D}{{Dt}}\) :
-
substantial derivative
- \(\frac{\mathfrak{d}}{{\mathfrak{d}t}}\) :
-
convected derivative [Eq. (3.17)]
- d R :
-
dXdYdZ
- \(\frac{\partial }{{\partial R}}\) :
-
vector operator with components \(\frac{\partial }{{\partial X}},\frac{\partial }{{\partial Y}},\frac{\partial }{{\partial Z}}\)
- ℛ e :
-
real part of
- 〈 〉:
-
expectation value defined in Eq. (3.13)
- {A, B, C}:
-
special symbol defined in Eq. (12.13)
- †:
-
transpose of a tensor
- *:
-
complex viscometric functions (see §§7, 8, 9, 22)
- ·:
-
time differentiation
- —:
-
expectation value in Eq. (4.25)
- —:
-
complex conjugate in Eq. (7.9)
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Bird, R.B., Warner, H.R., Evans, D.C. (1971). Kinetic theory and rheology of dumbbell suspensions with Brownian motion. In: Fortschritte der Hochpolymeren-Forschung. Advances in Polymer Science, vol 8. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-05483-9_9
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