2017/18 Undergraduate Module Catalogue

MECH3496 Thermofluids 3

20 creditsClass Size: 200

Module manager: Dr Malc Lawes
Email: M.Lawes@leeds.ac.uk

Taught: Semesters 1 & 2 (Sep to Jun) View Timetable

Year running 2017/18

Pre-requisites

MECH1215	Thermofluids 1
MECH1520	Engineering Mathematics
MECH2670	Thermofluids 2

This module is mutually exclusive with

MECH3790

Aerodynamics and Aerospace Propulsion

Module replaces

MECH 3495 Thermofluids

This module is not approved as a discovery module

Objectives

On completion of this module, students will have extended the foundation thermodynamics and fluid mechanics, developed in earlier years, to cover more advanced concepts and applications. Students will be able to investigate the effects of the major operating parameters controlling the performances of various energy-converting engines that include all of the principal, combustion powered, gas and steam power-plants in common use. Also students will be able to analyse refrigeration and vapour compression systems. Fluid mechanics will be extended to include high speed fluid mechanics and compressible flow. This will be illustrated through examples of aeronautical applications.

Learning outcomes
Application of thermodynamics to energy conversion cycles, understanding of compressible flows, principles of air-conditioning, principles and operation of various types of turbomachines

Skills outcomes
In addition to providing a firm foundation in the subject, this module develops the analytical and problem solving skills.

Syllabus

Semester 1

Analysis of cyclic processes. Carnot cycle.
Air-standard cycles: Otto, Diesel and Joule cycle. Indicated and brake mean effective parameters.
Steam power cycles: Rankine cycle and its practical implementations. Combined gas-vapour cycles.
Practical engines: reciprocal spark and diesel ignition engines and gas turbines.
Steam Turbines
Refrigeration: vapour compression cycle, practical implementations and effects of refrigerant, psychrometry.

Semester 2

Advanced thermodynamic applications.
Review of basic gas dynamic theories: adiabatic and isentropic flows, stagnation and static properties, international standard atmosphere, conservation laws (mass momentum, energy) steady flow processes and frames of reference.
Introduction to steady two-dimensional supersonic flow: planar and oblique shock waves, expansion waves.
Practical applications relating to aerospace propulsion systems including design considerations and fundamental performance analyses.
Gas Turbine Engines: Ideal and real cycle analysis of pure turbojets, turbofans, turboshafts including sub and supersonic intakes and nozzles, principles of turbomachinery, bleed air flows, afterburners and component design considerations.
Aero piston Engines: IC engine cycle analysis, momentum theory for propeller analysis.
Ramjets and scramjets.
Rocket Engines
Propulsion integration: Intake distortion, Interference drag.

Teaching methods

Delivery type	Number	Length hours	Student hours
Example Class	9	1.00	9.00
Lecture	37	1.00	37.00
Practical	2	2.00	4.00
Private study hours			150.00
Total Contact hours			50.00
Total hours (100hr per 10 credits)			200.00

Private study

The time comprises the preparation of the assessed coursework, approximately 15-20 hours; preparation for the final examination and independent learning.

Opportunities for Formative Feedback

An ample provision of the problem sets for an independent study and unassessed class test mid-way through the course

Methods of assessment

Coursework

Assessment type	Notes	% of formal assessment
Practical	.	20.00
In-course Assessment	Assessed example sets	20.00
Total percentage (Assessment Coursework)		40.00

Normally resits will be assessed by the same methodology as the first attempt, unless otherwise stated

Exams

Exam type	Exam duration	% of formal assessment
Standard exam (closed essays, MCQs etc)	2 hr	60.00
Total percentage (Assessment Exams)		60.00

Normally resits will be assessed by the same methodology as the first attempt, unless otherwise stated

Reading list

The reading list is available from the Library website

Last updated: 26/04/2017

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