Favre and Coantio 



unusual dispositions, dictated by specific requirements. For 

 instance, to obtain stable functioning at the lowest velocities, the 

 return circuit's area has been purposely reduced; the total head 

 loss has been increased by tightly finned heat exchangers acting as 

 flow equalizers just upstream the settling chamber; and the diffusors 

 have been fitted with vortex generators and stabilizing vanes. The 

 test section's area is 3.20 by 1.45 meter, and the overall size of the 

 facility 61 by 7.50 meters. The wind velocity can be continuously 

 varied from 0.5 to 14 meters per second, with a relative accuracy 

 of 2.10' , using a helicoidal fan driven by a variable speed D.C. 

 motor with electronic regulation. 



40 Xm 



500 1000 1500 2000 



( b:i 



10 



20 30 



(c:i 



40 Xm 



20 30 40 Xm 



C d ) 



Fig. 5. Estimated performance of the facility: a) Reynolds number, 

 and boundary layer thickness; b) Sensible and latent en- 

 thalpy fluxes; c) Wind- Waves' age and significant height; 

 d) Richardson number. 



46 



