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Fields and Flows (Fall 2011)

Course code : ME-FFL-U1
ECTS Credits : 5 Status : Compulsory
Revised : 22/02 2011 Written : 24/03 2009
Placement : Third semester Hours per week : 4
Length : 1 semester Teaching Language : English

Objective : To give both a theoretical and practical background for the formulation and the solution of flow problems within mechanical and energy systems.

A student who has met the objectives of the course will be able to:

• Characterize flows and parts of flows as laminar/turbulent, viscous/inviscid, steady/unsteady or compressible/incompressible.
• Describe properties of fluids and find values for the properties using tables, correlation and equation of state.
• Analyze simple fluid static problems and calculate pressures and buoyancy forces.
• Use Bernoulli’s equation and justify whether or not the equation is valid for a given flow.
• Use the control volume method for mass, momentum and energy conservation on simple problems related to technical issues for energy and machine components.
• Use dimensional analysis and explain the physical significance of certain dimensionless numbers for given flows and furthermore use these numbers in problem solving.
• Choose and use correlations for forces and pressure losses for both internal and external flows.
• Choose flow components and measuring techniques for an application using characteristics, correlations and estimates.
• Define efficiencies and calculate energy consumption for flow processes and components.
• Describe principles, performance curves and velocity diagrams for flow machines such as fans, pumps, turbines and propellers.
• Use the computer software EES (Engineering Equation Solver) for the solution and the visualization of flow problems.
• Read engineering literature on fluid mechanics.
Principal Content : Classification and properties of fluids. Fluid statics. Introduction to the basic principles for conservation of mass, momentum and energy for fluid mechanical systems. Conservation equations in control volume form. Bernoulli"s equation. Static, dynamic and total pressure. Dimensional analysis, modeling and similarity. Introduction to measurement techniques in fluid mechanics. Head loss in pipes and pipe systems. Drag and lift. Turbo machinery. Introduction to CFD using Flowlab.
Teaching method : The teaching is based on "learning by doing". There will be introductory and summing up lectures. Project work in small groups includes tutorial exercises, assignments, workshop and lab exercises, computer simulations, use of internet search engines and case studies.
Required prequisites : -
Recommended prerequisites : -
Relations : Project 3 and the course Thermodynamic Modeling (in the 3rd semester).
Type of examination : Four hours written examination
External examiner : External
Marking : 7 step scale
Remarks : This course is closely related to the project in the 3rd semester, and is an integrated part of the study program “Engineering Design & Industrial Innovation” offered by the Department of Mechanical Engineering. It is primarily for students enrolled in the program.
Teaching material : McGraw-Hill 2010, Second edition in SI units
- Fluid Mechanics: Fundamentals and Applications, ISBN: 978-007-128421-9, by Yunus A. Çengel and John M.

- Notes on CampusNet.
Responsible teacher : Michael Bertelsen , miber@dtu.dk