| Positive Displacement |
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| positive-displacement (PD) pumps displace a known quantity of liquid with each revolution of the pumping elements. This is done by trapping liquid between the pumping elements and a stationary casing. Pumping element designs include gears, lobes, rotary pistons, vanes, and screws. |
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| Fluid Mechanics |
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| Fluid Mechanicsis that section of applied mechanics, concerned with the statics and dynamics of liquids and gases.A knowledge of fluid mechanics is essential for the chemical engineer, because the majority of chemical processing operations are conducted either partially or totally in the fluid phase. |
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| Unit 3 Pumps |
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| Pump Terminology,Pump Classification, Reciprocating Pumps, Rotary Pumps, Centrifugal Pumps
Pumping Problems,Power and Efficiency Calculations,Pump Selection |
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| Types of Electric Drives |
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| An electric motor uses electrical energy to produce mechanical energy, through the interaction of magnetic fields and current-carrying conductors. |
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| Roto Dynamics Machines |
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| The fluid machines covered on this page are primarily hydraulic machines.The notes below only relate to the general principles involved - more specific notes and information on steam and pneumatic machines, are provided on the linked pages below
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| Properties Of Fluids |
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| The properties outlines below are general properties of fluids which are of interest in engineering. The symbol usually used to represent the property is specified together with some typical values in SI units for common fluids. |
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| Postive Displacement Pumps |
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| A Positive Displacement Pump has an expanding cavity on the suction side of the pump and a decreasing cavity on the discharge side. Liquid is allowed to flow into the pump as the cavity on the suction side expands and the liquid is forced out of the discharge as the cavity collapses. |
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| Minor Losses In Pipes |
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| Minor in comparison to friction losses which are considered major. |
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| Fluid Properties And Units |
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| All materials, solid or fluid, are composed of molecules discretely spread and in continuous motion |
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| Flow In Conduits |
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| Shear stress distribution across a pipe section,For steady, uniform flow, the momentum balance in s for
the fluid cylinder yields |
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| Finite Control Volume Analysis |
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| Mass,Linear Momentum,Moment of Momentum,Energy,Putting it all together!,etc.., |
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| Darcy-Weisbach Formula |
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| The flow of liquid through a pipe is resisted by viscous shear stresses within the liquid and the turbulence that occurs along the internal walls of the pipe, created by the roughness of the pipe material. |
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