Recent content by jmex

  1. jmex

    Disc lifted by pressurized air in a vertical tube

    Hi, I was away for some time, haven't read all the comments, will go through it and will definitely try to look into how we can implement here. Thank you everyone for all the inputs and I really appreciate your time.
  2. jmex

    Solenoid valve thermal part

    Hi, I was wondering if there's any opensource software which can simulate Electric-Thermal system (other than Elmerfem).
  3. jmex

    Disc lifted by pressurized air in a vertical tube

    This is a usual practice in Valve industry for a minimum valve lift required for least pressure drop by comparing two cross-section area. Here it would be pi*(D^2)/4 = pi*D*h hence h = D/4 It will be very helpful if you can share the sample problem similar to this model. I have done workout in...
  4. jmex

    Disc lifted by pressurized air in a vertical tube

    I believe the approach @Baluncore mentioned is correct of PE=KE. Still figuring out a way to find the lift iteratively. As the disc weight lifts up, its potential energy increases. This will increase the Force in the downward direction resulting more pressure energy required to lift it. Now it...
  5. jmex

    Disc lifted by pressurized air in a vertical tube

    yes, it will have constrained to move only in vertical direction. It will not be able to move in horizontal direction. Okay, using Bernoulli, I will get the velocity, still how do I find the gap using mass flow rate?
  6. jmex

    Disc lifted by pressurized air in a vertical tube

    Agree with you, but I am looking for a mathematical relation. Yes, I thought so, I could evaluate using CFD but it takes a long time to evaluate. Also, if there is any variation in any dimension, there would be change in results too. I was hoping to have a relation here that can provide an...
  7. jmex

    Disc lifted by pressurized air in a vertical tube

    The fluid media is air. Visualize blowing air through a pipe and trying to lift a disc. Disc is constrained its motion in vertical direction. While blowing, there will be pressure buildup in the pipe and will keep rising until the force due to pressure is equal to the weight of the disc. Once it...
  8. jmex

    Disc lifted by pressurized air in a vertical tube

    yes, assuming that as well that the pressure remains the same. How will I evaluate the height at which weight will reach?
  9. jmex

    HVAC Converting a Heat Source to Energy

    Hello All, I have some space outside my room which have sunlight all day. The room heats up to very high temperature. Is there any way I could use that heat to cool down my room without using solar panels? Just a thought.
  10. jmex

    Disc lifted by pressurized air in a vertical tube

    Hello, I have a circular pipe where there is an inbuild pressure and I have kept a circular weight on it. I would like to know what would be the lift of the weight under certain pressure. I know the relation that the minimum weight required to keep the pipe closed is F = P*A. (this F will be...
  11. jmex

    Solenoid valve thermal part

    was there any arrangement for dissipating heat from the system or was it through natural convection?
  12. jmex

    Solenoid valve thermal part

    Thanks alot Tom, this solves my problem.
  13. jmex

    Solenoid valve thermal part

    yes, motivated from industrial magnets to pick up scrap, we need that strong. Right now, my only concern is the thermal management of that system. Not sure how much heat will be generated and how should I calculate. Rest I can provide the boundary condition accordingly to see the thermal effects...
  14. jmex

    Solenoid valve thermal part

    the number of turns is 1000. Also thank you once again, this is a very good suggestion to remove magnetic field faster. Will keep that in mind
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