308
MICI-1FI. COAN.TI(’ AND ALEXANORF FAVHE
u/uU
Fit;. 5. Evolution of diniensionlcss velocity proliles.
the corresponding dimensionless profiles. Here, the mean wind velocity is
10 m s- ’, and the temperature and specific humidity differences are, respectively, about 10°C and 7 x
Turbulent momentum, heat, and evaporation fluxes can be obtained from
such profiles, either using the results of the semiempirical theory for nearneutral layers (the “profile” method), or by means of integral relations of
the von Karman type (the “integral” method). Average evaporation rates
arc also determined by continuous weighing of the amount of water that has
to be condensed to maintain a constant humidity level inside the facility.
(e - e,) eu - 8,)
FIG. 6 Evoluiion of dimensionless temperature profiles.
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