Force exerted by a agitated fluid on vessel wall

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SUMMARY

The discussion focuses on calculating the pressure exerted by an agitated fluid on the walls of a non-pressurized vessel. Key considerations include the effects of extreme acceleration and deceleration, as well as vibrations that may lead to fatigue and resonance. Participants emphasize the importance of understanding surge loading and suggest that calculations may involve wave analysis, hydraulics, and the water hammer effect to determine the necessary wall thickness. Critical areas of concern for pressure concentration are identified as the upper and lower parts of the container.

PREREQUISITES
  • Fluid dynamics principles, particularly related to pressure calculations
  • Understanding of surge loading and its implications on vessel design
  • Knowledge of wave analysis techniques in fluid mechanics
  • Familiarity with the water hammer effect in hydraulic systems
NEXT STEPS
  • Research methods for calculating pressure in agitated fluids using fluid dynamics
  • Explore surge loading analysis and its impact on vessel integrity
  • Study wave analysis techniques relevant to fluid agitation scenarios
  • Investigate the water hammer effect and its implications for vessel design
USEFUL FOR

Engineers, vessel designers, and fluid mechanics specialists involved in the design and analysis of reaction vessels under agitation conditions.

billy_boy
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How can I calculate the pressure exerted by a fluid on the walls of the vessel that is being agitated. The vessel is not pressurised. I have to calculate the resultant pressure on the walls to calculate the thickness of the vessel walls.
 
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Please describe the problem in more detail .
 
Minor agitations won't do much to the vessel. Might as well just design it to hold the mass of the liquid with a sensible factor of safety.

The only way I could think of, that the agitation of liquid could have a reasonable effect on the walls of the vessel is if you are making it undergo quite extreme acceleration and deceleration (is the vessel on hydraulic jacks or something?). Then, perhaps you could simply consider the G forces.

If the agitation is in the form of vibrations, it's a different story altogether, as you have to start looking into fatigue and avoiding resonance.
 
@billy_boy

Surge loading and similar problems are not particularly difficult to deal with . Could you could just give us a clearer idea about what you are trying to design ?
 
Dan S thank you. This is the answer i was looking for. It is a very simple reaction vessel
 
billy_boy said:
How can I calculate the pressure exerted by a fluid on the walls of the vessel that is being agitated. The vessel is not pressurised. I have to calculate the resultant pressure on the walls to calculate the thickness of the vessel walls.

Where do you think is the critical areas that needs attention? In the upper or the lower part of the container?
Calculation may involve wave analysis, hydraulics and water hammer effect.
 

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