Pressure distribution of buoyancy force

AI Thread Summary
To convert buoyancy force into pressure for a fully submerged solid cylinder, the pressure at any point can be calculated using the formula ρgh, where ρ is the fluid density and h is the height from the fluid surface. The resultant force from the pressure acting on the cylinder's surface equates to the buoyant force. The density used in calculations should be that of the fluid, and the height should be measured from the fluid surface to the point of interest on the cylinder. Clarifications on the reference point and the specific density differences were discussed, emphasizing the importance of accurate height measurement. Understanding these parameters is crucial for effective finite element analysis in this context.
flyingbird
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Let's say we have a solid cylinder which is fully submerged in water or any fluid having density lower than of cylinder's density. I want to find out how can we convert the buoyancy force in terms of pressure. Actually I am doing FE analysis of this kind of problem and software allows to apply pressure loads only. How can we find out the buoyancy pressure distribution along the radial hight of the cylinder. Cylinder is kept in horizontal position just as a submarine in water.

Thanks
FB
 
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flyingbird said:
Let's say we have a solid cylinder which is fully submerged in water or any fluid having density lower than of cylinder's density. I want to find out how can we convert the buoyancy force in terms of pressure. Actually I am doing FE analysis of this kind of problem and software allows to apply pressure loads only. How can we find out the buoyancy pressure distribution along the radial hight of the cylinder. Cylinder is kept in horizontal position just as a submarine in water.

Thanks
FB

The resultant force from the pressure acting on the surface of the body is the buoyant force.

The pressure at any point in a fluid is equal to \rho gh.

CS
 
stewartcs said:
The resultant force from the pressure acting on the surface of the body is the buoyant force.

The pressure at any point in a fluid is equal to \rho gh.

CS

Which density we have to use here?
is it difference between two densities?
And what hight will be used here? what is the reference point?
I have tried this, I don't think it is a correct way to do it.
 
flyingbird said:
Which density we have to use here?
is it difference between two densities?
And what hight will be used here? what is the reference point?
I have tried this, I don't think it is a correct way to do it.

The 'rho' term in the equation is the density of the fluid. The height is the point at which you wish to know the pressure referenced from the top of the fluid surface.

CS
 

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