45 



40 



{O LAMINAR (1) 

 O WAVELIKE (2) 

 O INTERMITTENT (3) 

 • TURBULENT (4) 



35 



30 



25 



20 



15 



10 



AMPLIFICATION FACTOR 

 ,11 „13 



±± 



0.2 



0.4 



0.6 



x/D 



0.8 



1.0 



1.2 



Figure 1 1 — Measured Flow Regimes on Model 6, 

 Compared with Amplification Factor 



29 



