411-205 Fluid Mechanics 1

Credit Points

Coordinator

Prerequisites

411-201 Transport Phenomena 1

Corequisites

None

Semester

Contact

Subject Description

The objective of this subject is to present (i) the mechanical energy balance equation and its application to flow in piping networks, (ii) pump characteristics, and (iii) mixing and scale·up in stirred tanks. Topics covered include:

Manometry. Derivation of continuity equation, mechanical energy balance. Friction losses in a straight pipe, Fanning friction factor, treatment of roughness, valves and fittings, flow coefficient in control valves. Simple network problems. Principles of open channel flow. Compressible flow - thermodynamic preliminaries, propagation of a pressure wave, derivation of the energy balance for flow through a pipe, isothermal and adiabatic flow equations in a pipe, treatment of valves and fittings in compressible flow, sudden valve closure. Pumps - introduction, pump head, pump characteristics, centrifugal pumps, derivation of theoretical head, head losses leading to the actual pump head curve, calculating system head, determining the operating point of a pumping system, throttling for flow control, power and efficiency, cavitation and NPSH, introduction to positive displacement pumps. Stirred tanks - introduction, radial, axial and tangential flow, agitator types, sparged tanks, vortex elimination, the standard tank configuration, power number and power curve, dynamic and geometric similarity in scale-up.

Assessment

One examination not exceeding three-hours at the end of semester two