NICOP - Thermoacoustic instability as pattern formation in a system far from equilibrium
Abstract
Thermoacoustic instability is a serious problem that is encountered during the development ofgas turbine and rocket engines. Thermo"acoustic instability occurs due to the complex interactionof flow, combustion and acoustic field, and often results in ruinously hi""gh-amplitude soundwaves, with catastrophic consequences. Traditional studies involves linear stability analysis, and arobust predi"ction is still elusive. The PI has been successful in the application of dynamicalsystems theory and complex systems theory to ther"moacoustic instability. However, our studieshave been so far primarily focused on temporal analysis. In the present project, we pro""pose tostudy the spatio-temporal dynamics at the onset of thermoacoustic instability, in the frameworkof synchronization theory. W"e will attempt to cast thermoacoustic instabilities in the frameworkof pattern formation in a system far from equilibrium. Using th"is understanding, we will attemptpassive control to mitigate instabilities. We will develop low order models for thesynchronizatio"n between the acoustic field and the reacting flow field. We will attempt toestablish thermoacoustic instability and other instabilities in turbulent flow systems as orderemerging from chaos. We will apply tools from the study of other transitions to thermoacousticsand also apply tools that we develop in the context of thermoacoustic instabilities to othertransitions.1
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 20, 2018
- Source ID
- N629091812061
Entities
People
- Sujith Raman Pillai Indusekharan Nai
Organizations
- Indian Institute of Technology Madras
- Office of Naval Research
- United States Navy