LIST OF FIGURES 



Figure Page 



1 Criterion for Transition from Laminar to Turbulent 



Flow with Oscillatory Motion ------------ 31 



2 Smooth Plate-Measured Velocity Distribution ----- 32 



3 Two-Dimensional Roughness-Measured Velocity 

 Distribution -------------------- 32 



4 Three-Dimensional Roughness-Measured Velocity 

 Distribution -------------------- 33 



5 Smooth Plate-Measured Phase Shift ---------- 34 



6 Two-Dimensional Roughness-Measured Phase Shift - - - 34 



7 Three -Dimensional Roughness-Measured Phase Shift - - 35 



8 Determination of A B^ and T] ----------- 36 



9 qg/$ versus D curve ----------------- 37 



10 Typical Unsteady Mean Velocity Profiles ------- 37 



11 Section of Velocity Measuring Instrument ------ 38 



LIST OF TABLES 



Table Page 



I Smooth Plate-Velocity and Phase Shift Measurement D-l 



II Two-Dimensional Roughness-Velocity and Phase D-3 

 Shift Measurement 



III-A Three-Dimensional Roughness-Velocity Measurement D-8 



III-B Three-Dimensional Roughness-Phase Shift Measurement D-17 



IV Experimental Data Used to Determine A*, B* and 1) D-19 



