Naturwissenschaften

, Volume 57, Issue 11, pp 525–533

Condensation by homogeneous nucleation in the vapor phase

  • Peter P. Wegener
  • Jean-Yves Parlange
Article

DOI: 10.1007/BF00625319

Cite this article as:
Wegener, P.P. & Parlange, JY. Naturwissenschaften (1970) 57: 525. doi:10.1007/BF00625319

List of Symbols

A

cluster, nozzle cross section

a

sound speed

C

concentration

g

condensate mass fraction

h

Planck's constant

I

moment of inertia, Eq. (12)

J

nucleation rate, Eqs. (21), (27), (28), and (29)

k

Boltzmann's constant

L

heat of condensation

M

Mach number

m

molecular mass

mr

mass of drop of radiusr

m

mass flow

N

number density of clusters

n

number of molecules in cluster

O

surface area

p

pressure

Q

partition function

Qrn

configurational integral, Eq. (8)

q

heat addition per unit mass

qrep

“replacement factor”, e. g. Eqs. (18) and (19)

qrot

rotational partition function, Eq. (11)

qtr

translational partition function, Eq. (10)

\(\tilde q_{{\text{tr}}} \)

alternate form ofqtr, Eq. (15)

r

droplet radius

T

absolute temperature

U

potential energy

u

How speed

V

volume

v

molecular volume

x

nozzle coordinate in flow direction

α

condensation coefficient

β

collision rate, Eq. (22)

γ

specific heat ratio

δ

length related to surface tension correction, Eq. (23)

μ

chemical potential

ν

molecular frequency

ϱ

density

τ

molecular coordinate

Superscript

*

indicates critical size

Subscripts

0

reference state

1

monomer

c

condensate

n

cluster withn molecules

r

cluster with radiusr

flat interface

Copyright information

© Springer-Verlag 1970

Authors and Affiliations

  • Peter P. Wegener
    • 1
  • Jean-Yves Parlange
    • 1
  1. 1.Department of Engineering and Applied ScienceYale UniversityNew Haven