Abstract
The rise velocity of premixed, laminar flame gases flowing in one (vertical) direction is usually measured using the particle track method. Our investigations in CO-air flames of about 2000 K with uniform rise velocities of about 15 m s−1 showed that the most suitable substance for velocity measurements was powdered molybdenite (MoS2). Under our experimental conditions the velocity of the solid particles increased with the height of measurement in the flame due to relaxation effects. The flame rise velocities we have determined experimentally could be reconciled, with allowance for the effects of gravity and relaxation, with those we have calculated from flame data.
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References
1.
Boss
C. B.
and
Hieftje
G. M.
, Appl. Spectrosc. 32 , 377 (1978 ).
2.
Fristrom
R. M.
and
Westenberg
A. A.
, Flame Structure (McGraw-Hill , New York , 1965 ).
3.
Kelly
R.
and
Padley
P. J.
, Proc. Roy. Soc. (London) A327 , 345 (1972 ); Trans. Faraday Soc. 65 , 355 (1969 ).
4.
Snelleman
W.
, Ph.D. Thesis , Utrecht University (1965 ).
5.
Hollander
Tj.
, Ph.D. Thesis , Utrecht University (1964 ).
6.
Hayhurst
A. N.
and
Telford
N. R.
, Combust. Flame 28 , 67 (1977 ).
7.
Newman
R. N.
and
Page
F. M.
, Combust. Flame 20 , 171 (1973 ).
8.
Alkemade
C. Th. J.
, Ph.D. Thesis , Utrecht University (1954 ).
9.
Purday
H. F. P.
, An Introduction to the Mechanics of Viscous Flow (Dover , New York , 1949 ).
10.
L'vov
B. V.
Katshov
D. A.
Kruglikova
L. P.
, and
Polzik
L. K.
, Spectrochim. Acta 31B , 49 (1976 ).
11.
Li
K.
, Anal. Chem. 48 , 2050 (1976 ).
12.
Boss
C. B.
and
Hieftje
G. M.
, Anal. Chem. 49 , 2112 (1977 ).
13.
van Stekelenburg
L. H. M.
, Ph.D. Thesis , Utrecht University (1943 ).
14.
Borgers
A. J.
, Ph.D. Thesis , Utrecht University (1978 ), available on request.