Page 489 - Modelling in Transport Phenomena A Conceptual Approach

NOTATION 469

6t penetration distance for heat, m
P viscosity, kg/ m. s
v kinematic viscosity, m2/ s
P density, kg/ m3
7r total momentum flux, N/ m2
7- dimensionless time
shear stress (flux of j - momentum in the i - direction, N/ m2
7- ij
Bracket
(4 average value of a

Subscripts
A, B species in binary systems
C center
ch characteristic
ref reference
Dimensionless Numbers

BiH Biot number for heat transfer
BiM Biot number for mass transfer
Fo Fourier number
Nu Nusselt number
Pr Prandtl number
Re Reynolds number

REFERENCES

Carslaw, H.S. and J.C. Jaeger, 1959, Conduction of Heat in Solids, 2"d Ed., Oxford
University Press, London.

Crank, J., 1956, The Mathematics of Diffusion, Oxford University Press, London.

Konak, A.R., 1994, Magic unveiled through the concept of heat and its transfer,
Chem. Eng. Ed. (Summer), 180.

SUGGESTED REFERENCES FOR FURTHER

STUDY

Bird, R.B., W.E. Stewart and E.N. Lightfoot, 1960, Transport Phenomena, Wiley,
New York.