HEAT TRANSFER AND TURHllLENT MIXING LAYERS
107
From the observations it appears justified to put
c 5 tl(,hV = COIlSt
and
so that one obtains
and
with the additional assumption that (cy'rk = 0 (the subscript index v refers
to vortex).
For a verifimtion of this result (i."r')* was computed from Eqs. (2) and (3)
using the measured A T and ii distributions and plotted in Fig. 18. where it
agrees quite satisfactorily with the 7 distribution. Accordingly the mean
teniperature distribution which was then computed from Eqs. (3) and (6)
7-F
urn A G v
-
0.1
a2
1
- 0.1
0
Fici. IK. Tlic turbulent diffusion term. ewluated from A7'1A7Jq) and it, u&).