DEVELOPMENT  OF BOUNDARY L~AYER  ON A SMOOTH FLAT  PLATE  TURBULENT  BOUNDARY  LLAMINAR  SUB-LAYER  COMPARISON OF VELOCITY PROFILES  FOR LAMINAR AND TURBULENT BOUNDARY  LAYERS  TURBULENT  I  PROFILE  I  LAMINAR  PROFILE  -  LOW THICKNESS  -  GREATER THICKNESS  -  LOW VELOCITIES NEXT TO SURFACE  -  HIGHER VELOCITIES NEXT TO SURFACE  -  GRADUAL VELOCITY CHANGE  -  SHARP VELOCITY CHANGE  -  LOW SKIN FRICTION  -  HIGHER SKIN FRICTION  figure 7.24. Boundary Layer Charactorisfics 