# Study-Unit Description

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CODE MEC2340

TITLE Fluid Mechanics 1

LEVEL 02 - Years 2, 3 in Modular Undergraduate Course

ECTS CREDITS 5

DEPARTMENT Mechanical Engineering

DESCRIPTION This study-unit introduces the basic concepts of fluid statics and fluid dynamics relevant to mechanical engineering with emphasis placed on physical understanding.

The study-unit covers the following topics:

- Fluid basics
Units, dimensional formulae, pressure, shear stress, viscosity.

- Data analysis
Introduction to basic statistical methods and combining experimental uncertainties.

- Fluid statics
Pressure in a static fluid, buoyancy, equilibrium, forces on submerged bodies, stability of floating bodies, small oscillations of floating bodies, pressure measurement, aerostatics.

- Fluid dynamics
Graphical description of fluid motion, Integral relations for a control volume, differential relations to fluid flow, mass continuity, Bernoulli equation, conservation of energy, linear and angular momentum, the Navier-Stokes equations for a Newtonian fluid.

Study-unit Aims:

The main scope of this unit is to introduce students to the basic concepts in fluid statics and dynamics relevant to mechanical engineering. The study-unit also aims to lay the necessary foundations in fluid mechanics necessary for other study units covered in the following semesters.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:
- determine the units and dimensions for various properties and terms used in fluid mechanics.
- distinguish between various sources of error when conducting physical experiments in fluid mechanics.
- define the relation between pressure and head in a static fluid.
- explain the variation of the hydrostatic force with depth for a flat surface submerged in a static fluid.
- distinguish between the different aerostatic models used to model the variation of atmospheric air pressure, temperature and density with altitude.
- define the terms pathline, streakline and streamline used to describe flow fields.
- distinguish between the Eulerian and Lagrangian concepts for analysing flow fields.
- explain the concept of a control volume for solving various fluid flow problems.
- distinguish between different techniques to measure the velocity of a fluid.

2. Skills:

By the end of the study-unit the student will be able to:
- list the commonly used terms used in fluid mechanics.
- apply statistical methods to compute the combined uncertainty resulting from various experimental measurements.
- analyse various problems involving fluid statics in mechanical engineering.
- compute the hydrostatic forces of plane and curve surfaces submerged in a static fluid.
- determine the stability of floating and non-floating bodies.
- compute the natural oscillating frequency of a simple buoyant structure with a single degree of freedom.
- apply the mass continuity, Bernoulli equation, conservation of energy and linear and angular momentum relations to simple one-dimensional steady flow problems in engineering.

Main Text/s and any supplementary readings:

Fluid Mechanics
Frank M. White (Author)
McGraw-Hill International Edition
ISBN 978-0-07-128645-9

Fluid Mechanics, Fifth Edition
J.F. Douglas (Author); J.M. Gasiorek (Author); J.A. Swaffield (Author); L.B. Jack (Author)
Pearson - Prentice Hall (2005)
ISBN-10:0131292935

STUDY-UNIT TYPE Lecture, Independent Study, Practicum & Tutorial

METHOD OF ASSESSMENT
 Assessment Component/s Assessment Due Resit Availability Weighting Practical SEM1 Yes 20% Online Examination (2 Hours) SEM1 Yes 80%

LECTURER/S Simon Mizzi (Co-ord.)

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the description above applies to study-units available during the academic year 2020/1. It may be subject to change in subsequent years.

https://www.um.edu.mt/course/studyunit