Losses when Object is moving through Pressurized Air

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SUMMARY

The discussion focuses on the losses experienced by an object moving at high speeds (200-300 MPH) through a pressurized air tunnel (5-10 psi). Key losses include drag, heat loss due to viscous dissipation, and frictional losses. The analogy of a floating puck in an air hockey game illustrates similar principles, emphasizing that drag and friction are significant factors. The conversation highlights the importance of understanding these losses for engineering design considerations.

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  • Understanding of fluid dynamics principles
  • Knowledge of heat transfer mechanisms
  • Familiarity with drag force calculations
  • Basic concepts of viscous dissipation
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Omega037
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I am a grad student(engineering, but not mechanical), and I have a rather difficult question for an actual design I am working on. If you have an object moving 200-300MPH in a pressurized air tunnel(5-10 psi), besides the losses due to drag, what are the losses, if any, that occur on the object. I imagine there would be some heat losses, but I am trying to find out if they would be significant.

For an analogous problem, what losses would there be on a floating puck in an air hockey game that is moving 0.1 m/s and floating above the surface(small holes push air upwards, making the puck hover). Just the drag of the air moving across the top and around the sides?
 
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what kind of losses?? You already pointed out frictional losses.

heat loss? yes, if the two things are at different temperatures. I think it ll rather heat up from viscous dissipation.
 

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