Acoustic Instabilities in Aerospace Propulsion

Course Description

Topics outline:
- Introduction to acoustics and combustion driven oscillations.
- Derivation of the wave equation.
- Traveling wave solutions.
- Standing wave solutions.
- Effect of inhomogeneous media on sound propagation.
- Multi-dimensional acoustics.
- Fundamentals of combustion instability.
- Basic principles.
- Rayleigh criteria.
- Instability in solid and liquid rockets, ramjets, gas turbines.
- Pulse combustors.
- Passive and active control of combustion instability.
Theoretical analysis of combustion instability.
- Modal stablility analysis.
- Nonmodal stability analysis.

Acoustic Instabilities in Aerospace Propulsion
Still from Lecture 17 : Reference Books Derivation of Rayleigh Criteria
Not yet rated

Video Lectures & Study Materials

Visit the official course website for more study materials: http://nptel.ac.in/syllabus/101106031/

# Lecture Play Lecture
1 Introduction to Thermoacoustic Instabilities (50:19) Play Video
2 Introduction to Acoustics: Conservation Equations (53:14) Play Video
3 Wave Equation and its Solution in Time Domain (52:14) Play Video
4 Harmonic Waves: Acoustic Energy Corollory (49:47) Play Video
5 Standing Waves (49:38) Play Video
6 Standing Waves II (51:33) Play Video
7 Power Flow and Acoustic Admittance (50:30) Play Video
8 Impedance Tube Technique (48:59) Play Video
9 Admittance and Standing Waves (48:59) Play Video
10 Admittance, Stability and Attenuation (47:57) Play Video
11 Attenuation: Continued Sound Propagation Through Inhomogeneous Media I (51:27) Play Video
12 Attenuation: Continued Sound Propagation Through Inhomogeneous Media II (49:37) Play Video
13 Attenuation: Continued Sound Propagation Through Inhomogeneous Media III (49:11) Play Video
14 Multidimensional Acoustic Fields I (50:34) Play Video
15 Multidimensional Acoustic Fields II (49:30) Play Video
16 Interaction between Sound and Combustion (48:59) Play Video
17 Reference Books Derivation of Rayleigh Criteria (50:30) Play Video
18 Effect of Heat release on the Acoustic Field (49:03) Play Video
19 Modal Analysis of Thermoacoustic Instability I (48:40) Play Video
20 Modal Analysis of Thermoacoustic Instability II (43:32) Play Video
21 Active Control of Thermoacoustic Instability (50:42) Play Video
22 Toy model for a Rijke tube in Time Domain (53:21) Play Video
23 Galerkin Technique for Thermoacoustics (46:37) Play Video
24 Evolution Equation for Thermoacoustics (50:09) Play Video
25 Non Linear Analysis of Thermoacoustic Instability (50:11) Play Video
26 Non-normality, Transient Growth and Triggering Instability I (46:57) Play Video
27 Non-normality, Transient Growth and Triggering Instability II (49:15) Play Video
28 Non-normality, Transient Growth and Triggering Instability III (50:50) Play Video
29 Bifurcations (49:06) Play Video
30 Premixed Flame Acoustic Interaction I (48:23) Play Video
31 Premixed Flame Acoustic Interaction II (45:11) Play Video
32 Combustion instability due to Equivalence Ratio Fluctuation (50:17) Play Video
33 Role of Hydrodynamic Instabilities I (47:07) Play Video
34 Role of Hydrodynamic Instabilities II (51:38) Play Video
35 Role of Hydrodynamic Instabilities III (47:50) Play Video
36 Active Control of Thermoacoustic Instability Revisited (52:05) Play Video
37 Solid Propellant Combustion Instability I (51:17) Play Video
38 Solid Propellant Combustion Instability II (48:20) Play Video
39 Response of a Diffusion Flame to Acoustic Oscillations I (43:35) Play Video
40 Response of a Diffusion Flame to Acoustic Oscillations II (43:21) Play Video
41 Response of a Diffusion Flame to Acoustic Oscillations III (53:38) Play Video

Comments

There are no comments. Be the first to post one.
  Post comment as a guest user.
Click to login or register:
Your name:
Your email:
(will not appear)
Your comment:
(max. 1000 characters)
Are you human? (Sorry)
 
Disclaimer:
CosmoLearning is promoting these materials solely for nonprofit educational purposes, and to recognize contributions made by Indian Institute of Technology, Madras (IIT Madras) to online education. We do not host or upload any copyrighted materials, including videos hosted on video websites like YouTube*, unless with explicit permission from the author(s). All intellectual property rights are reserved to IIT Madras and involved parties. CosmoLearning is not endorsed by IIT Madras, and we are not affiliated with them, unless otherwise specified. Any questions, claims or concerns regarding this content should be directed to their creator(s).

*If any embedded videos constitute copyright infringement, we strictly recommend contacting the website hosts directly to have such videos taken down. In such an event, these videos will no longer be playable on CosmoLearning or other websites.