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RISE Leadership Academy Research: Air Entrainment by a Laminar Jet. Arec Jamgochian UMD Mechanical Engineering ’16 Under auspices of Dr. Ken Kiger. Research Background. Worked in the Hydrodynamics Lab under Dr. Ken Kiger Entrainment is when air bubbles become trapped due

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rise leadership academy research air entrainment by a laminar jet

RISE Leadership Academy Research:Air Entrainment by a Laminar Jet

ArecJamgochian

UMD Mechanical Engineering ’16

Under auspices of Dr. Ken Kiger

research background
Research Background
  • Worked in the Hydrodynamics Lab under Dr. Ken Kiger
  • Entrainment is when air bubbles become trapped due
  • Unwanted entrainment causes the Metal Casting industry millions a year
  • Also of interest to the Navy – air entrainment makes the path of ships easily noticeable
  • Must figure out circumstances which air entrains
laminar jet
Laminar Jet
  • How?
    • Disturbance pushes through surface water, jet pushes through hemisphere, the new part created seals around and splits off.
research
Research
  • Use jet assembly to create laminar flow
research1
Research
  • Use speakers to drive cup, making symmetric capillary (surface) waves
research2
Research
  • Use other speaker to drive jet stand up-down, making waves on the jet
research3
Research
  • Do the two processes together, driving both speakers at the same frequency with a phase shift to determine when air entrains
  • Record all using Phantom High-Speed Camera
problems
Problems
  • Things would keep breaking/leaking, proper parts took time to arrive
  • Figuring out how to get to where the project had been left off
    • Reassembling structure, reprogramming electronics
  • Process of jet assembly takes a long time
    • Needed more hours in the week
  • Had to work with/around other student
leadership
Leadership
  • Inside the lab, not a whole lot necessary
    • Making sure to find time to come in
    • Making sure to get needed parts
  • Outside the lab, improved leadership a lot
    • VP of Society of Physics Students, VP of Armenian Student Union
    • Able to take more initiative to do more things at once
kouzes and posner
Kouzes and Posner
  • Initially was best at Inspiring a Shared Vision, worst at Encouraging the Heart
  • Realized how important appreciation is in everyday interaction, and have started showing more appreciation for the people around me