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Unformatted text preview: fluid has to being defo For a Newtonian fluid and shear strain (the g Assume no slip condit y U ∂ ∂ = μ τ Not all fluids are New density of a fluid as compared w G is a ratio and has no units ness” or fluidity of a fluid. The re formed by shear stress. d the relationship between shee gradient of the velocity profile) ition. tonian with water. esistance a er stress ) is Fluid Statics Pressure in a fluid increases with depth and is independent of direction as long as the fluid is at rest. Basic Equation for a Pressure Field The resultant force on a small fluid element depends only on the pressure gradient if no shear stresses are present. The equation of motion for a fluid without shear is a k p r ) ρ γ =∇(1) The gradient or “del” operator ∇ is defined as: For a fluid at rest equation (1) reduces to:...
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 Spring '08
 Uzgoren
 Fluid Dynamics, Fluid Mechanics, Shear Stress, 1 slug

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