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CH253 - Momentum Transfer Lab
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A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In a packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given as P/L = 375 x 10 V + 10.94 x 10 V (SI units). If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed?
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In a turbulent flow in a pipe the shear stress is
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For laminar flow of Newtonian fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )
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Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an __________ manometer.
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In a circular tube of radius R carrying a laminar flow, the ratio of average velocity to the maximum velocity in the conduit is
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Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
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Pressure gradient in the pipe flow is influenced by the
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Laminar flow of a Newtonian fluid ceases to exist, when the Reynolds number exceeds
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For the same flow rate of a fluid, the pressure drop is the least for
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A globe valve is the most suitable for applications, in which
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