MEC 4105 – Fluid Dynamics III

Credits:   4 
Lectures/Tut.:   2 hr/wk 
Labs:  3 sessions 
Prerequisite:  MEC3104                                                      Leads to:   MEC4103

Objectives

This unit reinforces topics covered in Fluid Mechanics I and II.  More advanced problems on pipflow are dealt with together with applications of the momentum equation and dimensional analysis.

Syllabus

§         The Impulse-Momentum Equaltion: The Momentum Equation and its applications to forces on pipe bends including position of line of action of resultant force.  The momentum correction factor.

§         Dimensional Analysis: The Buckingham Pi Theorem.  Dimensionless parameters.  Reynolds and Froude Numbers.  Forces on bodies immersed in a fluid stream.  Lift and drag.  Dynamic similarity.  Model ship tests.

§         Flow in Pipes: Power and log law velocity distributions.  Flow rate measurement from pitot-static tube traverses.  Branched pipes.  Flow through ducts of non-circular section. 

§         Boundar Layer Theory: Laminar and Turbulant Boundary Layers; Displacement and Momentum thickness, Flour Separation.

Laboratory Work

§         Drag coefficients for cylinder and flat plate.

§         The impact of a water jet on a 2-D cup.

§         Airflow in Pipes.

Assessment
Coursework - 10% 
Exam - 90%

Reference  Textbooks

• White F.M., Fluid Mechanics, 3^rd edition.