Brief Review

1
Brief Review

• Last year we couldnt achieve much success at
  eliminating separation over the wavy wall using
  suction.
• Dr. Simpson suggested using Vortex generators,
  which showed better performance to some extent.
• It was also suggested that we eliminate the
  incoming boundary layer along the convergent
  straight part at the beginning of the wavy wall
  test section.
• The Plexiglas panels covering the side walls of
  the convergent parts were replaced with porous
  aluminum plates.
• It was decided that we use vortex generators
  along the side walls and at the corners to
  energize the boundary layer, in combination with
  suction.

2
Testing Plan

• First set of measurements is going to be at the
  end of the converging part using the 7-hole
  probe, with no suction or VG, to know who the
  flow field is behaving and to have a reference
  flow to determine the how well the boundary layer
  is eliminated.
• Apply suction at the middle of the converging
  part, open a slot of about 0.5-1.
• Attach a VG downstream of the suction slot.
• Measure the flow again and determine the
  efficiency of this setup.
• After the initial boundary layer is eliminated
  suction and VG will be applied in a similar
  manner to the rest of the wave as shown in the
  figure.
• Suction will be applied downstream of peaks,
  (3?/4), at one or two slots per wave. Slot sizes
  will be adjusted according to need.

3
Vortex Generators Preliminary Layout