Background on engine types
for aircraft propulsion
References
References of the figures presented on slides 1 to
75 are given on slides 119 to 121
Aircraft propulsion engine types
(a) Piston engine
Powered all aircraft until arrival of gas turbine engines
Thermomachines TRM4A11
1st semester 2016
Week 2
Ideal, simple gas turbine thermal efficiency ito pressure ratio
Effect of g on cycle thermal efficiency
Simple gas turbine work
Class example: Ideal simple gas turbine cycle
Net specific work in terms of max
Week 3: Shaft power cycles
Ideal cycles part 3
Component losses
Polytropic efficiency, Cascading of small stages example,
Pressure losses, HE effectiveness, Mechanical losses,
Variation in specific heats, Fuel-air ratio, Combustion
efficiency, Cycle effi
Thermomachines TRM 4A11
1st semester 2017
Week 3 part 2
Chapter 2 shaft cycles conclusion
Homework for Friday 2017-03-03
Gas turbine cycles for aircraft propulsion
Differences between aircraft- and land-based gas turbines
Aircraft gas turbine configura
Thermomachines TRM 4A11
1st semester 2017
Part 2 of curriculum
Reciprocating Internal Combustion Engines
(RICEs)
Textbook for RICE part of TRM4A11
Pulkrabek, W.W., Engineering Fundamentals of the
Internal Combustion Engine, Pearson New International
Editi
Thermomachines TRM4A11
1st semester 2016
Week 2 part 2
Further modifications to simple ideal gas turbine cycle:
Ideal cycle with reheat
Ideal cycle with reheat and heat exchange
Ideal cycle with intercooled compression (intercooling)
Ideal cycle with rehe
Thermomachines TRM 4A11
1st semester 2017
Environmental issues of gas turbine engines
Air pollution
Noise
Environmental issues of
gas turbines
Applicable sections in CRSS
Environmental issues, pp. 34 36, Section 1.7
Some important factors affecting combus
Lecture 2:Irreversibility and Availability
Module Enabling Objectives
Define and understand the concept of available energy
Identify the difference between energy and availability (exergy)
Understand the difference between the first and second law
efficie
ENABLING OBJECTIVES
Illustrate the various physical arrangements used in steam power
plants and refrigeration
To determine the ideal thermodynamic efficiencies associated
with various thermodynamic cycles of working fluid
Apply general laws of thermodynam
ENABLING OBJECTIVES
Write the combustion equation for the stoichiometric reaction of any
fuel
Handle the combustion of fuel mixtures as well as moist air oxidizer
Apply the first law of thermodynamics to the combustion of fuel
mixtures
Deal with the conde
ENABLING OBJECTIVES
What do we aim to achieve in this section?
Define and understand the concept of available energy
Identify the difference between energy and availability
(exergy)
Understand the difference between the first and second
law efficiency
1
THERMO FLUIDS 3A
Lecturer: Mr D. M. Madyira
Office:
B4 Lab 218
Phone:
011 559 4030
Email: [email protected]
All lectures will be presented in English!
TMS 3A11
2
HOUSE KEEPING
Class Representative
Lecture Times
Text Books
Study Guide
Course Structure
Co
ENABLING OBJECTIVES
Study power and refrigeration systems involving steady state flow
processes
Understand gaseous working fluids
Understand power cycles for piston/cylinder systems involving
boundary movement work
Examine combined cycle systems for power
ENABLING OBJECTIVES
Define an ideal mixture of ideal gases
Characterise ideal gas mixtures on a molar and mass basis
Characterise ideal gas mixtures using partial pressures and
determine their effect on thermodynamic behaviour
Determine the entropy genera
ENABLING OBJECTIVES
What do we aim to achieve in this section?
Extend 2ND Law to more general control volumes
Apply 2ND law to steady state devices such
as
turbines, compressors, nozzles etc.
Apply
thermodynamic theory to real devices using
efficiency
Lecture 1:Entropy Equation for a Control Volume
Section Enabling Objectives
Extend 2ND Law to more general control volumes
Apply 2ND law to steady state devices such as turbines,
compressors, nozzles etc
Apply thermodynamic theory to real devices using ef
TMS3A11
1
Exercise 1
(Control Volume Application of 2ND Law)
-Q1.
Consider a steam turbine in which the steam enters as superheated vapor at 800 K and 6
MPa and exits at 0.1 MPa. The flow rate of the steam is 15 kg/s and the isentropic efficiency
of the t
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 05
Unit 04
Conductors in electric field
Image charges
Capacitance/capacitor
Energy stored in a capacitor
Prof. S. Razzaque
2
Nonconductors in electric field
Electric field through a nonconductor
The fie
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 03
Prof. S. Razzaque
Unit 02
Electric Field
Electric Flux
Gausss law
Fields of symmetric charge distributions
Charged sphere, Line charge, Surface charge
Force on a layer of charge
Energy associated with
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 09
Unit 06
Field of a moving charge
Magnetic field from special relativity
Unit 07
Basics of magnetic field
Magnetic field properties
Prof. S. Razzaque
2
Field of a moving charge
Point charge Q is at res
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 12
Unit 08
Electromagnetic induction
Electromotive force
Magnetic flux
Lenzs law
Prof. S. Razzaque
2
Conducting rod moving in uniform B field
Recall B field inside a long solenoid is
uniform and paralle
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 13
Unit 08
Magnetic flux and emf
Faradays law and relation between E and B
Mutual inductance
Self inductance
Circuit with self inductance
Energy stored in magnetic field
Prof. S. Razzaque
2
Magnetic flux
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 02
Unit 01
Gradient, Divergence and Curl
Vector integration
Cylindrical and Spherical Coordinates
Unit 02
Electric Charge
Charge conservation and quantization
Coulombs law and system of charges
Electric
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 04
Unit 03
Electric potential
Potential difference
Potential of a charge distribution
Electric field from potential
Electric dipole
Differential form of Gausss law
Prof. S. Razzaque
2
Line integral of el
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 20
Unit 12
Magnetic Fields in Matter
Magnetic monopole
Magnetic dipole
Force on a magnetic dipole
Prof. S. Razzaque
2
Magnetic Dipole
Calculate the magnetic field of a current loop
Loop (can be irregula
PHY002B
STATIC AND DYNAMIC ELECTROMAGNETISM
LECTURE 01
Unit 01
Scalars and Vectors
Coordinate system
Components of a vector
Addition of vectors
Vector Dot and Cross products
Vector differentiation
Prof. S. Razzaque
2
Scalars and Vectors
A scalar is a qua