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This subject concerns the fundamental science of fluid flow relevant to a range of engineering applications, and is essential for specialisations relating to Chemical, Civil and Environmental Engineering.
Topics covered include - Fluid statics, manometry, derivation of the continuity equation, mechanical energy balance, friction losses in a straight pipe, Newton’s law of viscosity, treatment of pipe roughness, valves and fittings; simple pipe network problems; principles of open channel flow; compressible flow, propagation of pressure wave, isothermal and adiabatic flow equations in a pipe, choked flow. Pumps – 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, cavitation and NPSH, affinity laws and pump scale-up, introduction to positive displacement pumps; stirred tanks- radial, axial and tangential flow, type of agitators, vortex elimination, the standard tank configuration, power number and power curve, dynamic and geometric similarity in scale-up; Newtonian and non-Newtonian fluids, Multi-dimensional fluid flow-momentum flux, development of multi-dimensional equations of continuity and for momentum transfer, Navier-Stokes equations, application to tube flow, Couette flow, Stokes flow.
Intended learning outcomes
INTENDED LEARNING OUTCOMES (ILO)
On completion of this subject the student is expected to:
- Apply the fundamental conservation laws of fluid mechanics to solve engineering problems
- Solve mechanical energy balances in pipe flow, scale-up pumps and mixers
- Apply the Navier-Stokes equations to determine velocity profiles in axisymmetric and planar flows
- Predict the flow depth in various open-channel flow scenarios
- Calculate forces on submerged objects
- Understand the key dimensionless parameters in fluid mechanics
- Ability to undertake problem identification, formulation and solution
- Capacity for independent thought
- Ability to plan work and to use time effectively.
Last updated: 20 October 2020