HYD07009 2019 Hydraulics 301H

Understand the development of flow theory.  Define, quantify and formulate the concepts of surface roughness and boundary layer theory. Analyse and solve various water network analysis problems

Analyse and solve various water network analysis problems using Hardy-Cross and Nodal methods.

Define , quantify and formulate the concepts of the Buckingham Phi theory and dimensional analysis . Apply principles to solving problems involving the design of pumps and turbines.

Recognise and advice on any limitations or shortcomings associated with the interpretations of laboratory and field test data.

Interpret  requirement, carry out analyses and provide detailed  design of water supply, surface water, foul sewer and SuDS attenuation systems.

Lectures, practicals and projects.

15% Practical

15% Project

70% Final Exam.

Resubmit Practicals

Resubmit Project.

Resit Final Exam.

Indicative Syllabus

1. General dynamic equations along and normal to streamlines. The velocity potential function in steady two-dimensional flows. Flows resulting in simple combinations of a uniform stream, source and sink, doublet and point vortex. Flow around a circular cylinder with circulation, including pressure distribution and lift force.
2. Rough and smooth pipe law, laminar and turbulent boundary layer, influence of surface roughness, boundary layer theory, factors affecting boundary layer transition, boundary layer separation and wake formation. The universal resistance diagram.
3. The Colebrook-White equation, Water modelling analysis of pipe networks under steady flow conditions using, Hardy Cross (the loop method) and  the nodal method. The analysis and design of water supply networks.
4. The Modified Rational Method, surface water runoff estimation, the Wallingford Procedure,  gravity sewer design. Sustainable Drainage Systems (SuDS). Pre- treatment, Source Control, Site Control and Regional Control.  Foul Sewer Design using the NDU method.
5. Buckingham Π theory,, dimensional analysis,  dimensionless pump characteristics, manipulation of pump curves involving multi-speed pumps, choice of  pumps, multi-stage pumping, specific pump speed , design of pump sumps
6. Euler Turbine Equation, Design of Pump Impellers, Impulse Turbines and Reaction Impeller Design. The Betz Limit, Turbine Specific Speed.
7. Bernoulli's equation for incompressible flow,mach number, stagnation pressure and temperature, Isentropic flow or perfect gases, estimation of gas flow velocities and flow rates through orifice plates and convergent nozzles.
8.  Definition of unsteady flow. Surge pressures in compressible fluids, surge in rigid pipelines, velocity of transmission of a pressure wave. Surge in flexible pipes  and thin walled pressure vessels.

 Indicative Practicals 

1. Design of a water supply system with ‘Epanet' network analysis project.
2. Multispeed pump efficiency and head loss experiment.
3. Design a surge tank through experiment.
4. Pump sump design experiment.

Project.

Design a water supply, foul sewer and surface water drainage system for a proposed development site inclusive of SuDS elements to Local Authority Requirements.