Class5_forces_on_curved_surfaces

Class5_forces_on_curved_surfaces - Separating Forces...

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http://www.melfisher.com 9/7/2010 1 ES330, Section 2 Dr. Douglas Bohl 239 Camp x6683, dbohl@clarkson.edu www.clarkson.edu/~dbohl/es330
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Outline • Forces on Submerged Surfaces • Buoyancy 9/7/2010 2 • Learning Objective: Be able to determine the force and its location on a curved submerged surface.
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Forces on Plane Submerged Objects Remember that the force is calculated using the pressure at the centroid of the surface. This is the location of the average hydrostatic pressure on the object. This force acts lower on the object to balance out the moment created by the distributed force . 9/7/2010 3
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Forces on Submerged Curved Surfaces • To calculate the hydrostatic force on a curved surface the pressure distribution on the surface should be integrated along the urface. 9/7/2010 4 surface. • Instead, we can find the force and location by breaking the resultant force into components and solving the moment equation.
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Unformatted text preview: Separating Forces 9/7/2010 5 9/7/2010 6 Example A 20ft long gate is hinged at H as shown. Find the horizontal Pressure P required to hold the gate in place. 9/7/2010 7 9/7/2010 8 9/7/2010 9 9/7/2010 10 Buoyancy Buoyancy force is the force acting on a submerged body due to non-equal pressure forces. 9/7/2010 11 9/7/2010 12 Example 9/7/2010 13 Buoyancy Buoyancy forces in gases are very small due to low density of displaced gas. If object > fluid the object will??? 9/7/2010 14 For floating objects the Weight of the entire object is balanced by the weight of the displaced fluid Use only the volume of the object below the free surface of the fluid Using Archimedes Principle to Find Treasure 9/7/2010 15 Just some stuff I found on the bottom of the ocean ;) 9/7/2010 16 Just some stuff I found on the bottom of the ocean ;) 9/7/2010 17...
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This note was uploaded on 09/30/2010 for the course FLUIDS ES 340 taught by Professor Bohl during the Fall '10 term at Clarkson University .

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Class5_forces_on_curved_surfaces - Separating Forces...

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