Page 509 - Modelling in Transport Phenomena A Conceptual Approach

11.3. ABSORPTION WrrH REACTION 489

n number of moles, kmol
n molar flow rate, kmol/ s
Q heat transfer rate, W
Q volumetric flow rate, m3/ s
4 heat flux, W/m2
R radius, m
92 rate of generation (momentum, energy, mass) per unit volume
T temperature, "Cor K
t time, s
V volume, m3
2, velocity, m/ s
a thermal difFusivity, m2/ s
/I viscosity, kg/ m. s
U kinematic viscosity, m2/ s
P density, kg/ m3
x total momentum flux, N/ m2
shear stress (flux of j - momentum in the i - direction), N/ m2
Tij
Bracket
(4 average value of a

Subscripts
A, B species in binary systems
i species in multicomponent systems

REFERENCES

Danckwerts, P.V., 1951, Absorption by simultaneous diffusion and chemical reac-
tion into particles of various shapes and into falling drops, J. Chem. SOC. Faraday
Trans. 47, 1014.

Slattery, J.C., 1972, Momentum, Energy, and Mass Transfer in Continua, McGraw-
Hill, New York.

SUGGESTED REFERENCES FOR FURTHER
STUDY

Astarita, G., 1967, Mass Transfer With Chemical Reaction, Elsevier, Amsterdam.