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  1. johannestoger

    Piston/cylinder pulsatile pump - seal using O-rings?

    Hi, I'm a medical imaging engineer well outside my comfort zone - I hope you can give some insight on a flow experiment I'm designing. We're trying to generate a controlled pulsatile flow in a 1" pipe. The peak flow is around 0.6 m/s (2 ft/s), and the pulse should go from zero to peak to zero...
  2. johannestoger

    Air cylinder friction

    Hi fellow engineers, I'm a medical imaging engineer way outside my comfort zone, and I hope you can give some insight. We're trying to generate fast, accurate pulses of water in a 1" pipe. We want a peak velocity of 0.6 m/s and a pulse lenght of 300 ms. Our current idea is to take a 1"...
  3. johannestoger

    Proportional valve for water, low pressure

    Hi, We're designing a flow experiment where we need to produce a controlled pulse of water in a pipe. Our current design idea is based on a constant head tank, a flow meter, a proportional valve and a control system as follows: Image from Gharib et al. J Fluid Mech 1998. External factors...

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