41 citations · 98 across the 8 of their papers we have counts for
8 papers
Emergence of order from chaos through a continuous phase transition in a turbulent reactive flow system
Sivakumar Sudarsanan, Amitesh Roy, Induja Pavithran +2
As the Reynolds number is increased, a laminar fluid flow becomes turbulent, and the range of time and length scales associated with the flow increases. Yet, in a turbulent reactiv…
Coupled thermoacoustic interactions in hydrogen enriched lean combustion
Abhishek Kushwaha, Amitesh Roy, Ianko Chterev +2
In this paper, we present a framework to study the synchronization of flow velocity with acoustic pressure and heat-release rate in technically-premixed swirl flames. The framework…
Abrupt transitions in turbulent thermoacoustic systems
Ramesh S. Bhavi, Induja Pavithran, Amitesh Roy +1
Abrupt transitions to the state of thermoacoustic instability (TAI) in gas turbine combustors are a significant challenge plaguing the development of next-generation low-emission a…
Small-scale intermittency of premixed turbulent flames
Amitesh Roy, Jason Ryan Picardo, Benjamin Emerson +2
Premixed turbulent flames, encountered in power generation and propulsion engines, are an archetype of a randomly advected, self-propagating surface. While such a flame is known to…
Dynamics of coupled thermoacoustic oscillators under asymmetric forcing: Experiments and theoretical modeling
Ankit Sahay, Amitesh Roy, Samadhan A. Pawar +1
Quenching of limit cycle oscillations (LCO), either through mutual coupling or external forcing, has attracted wide attention in several fields of science and engineering. However,…
Critical region in the spatiotemporal dynamics of a turbulent thermoacoustic system and smart passive control
Amitesh Roy, C P Premchand, Manikandan Raghunathan +3
We develop a passive control strategy for suppressing thermoacoustic instability in a bluff-body stabilized premixed turbulent combustor. When the equivalence ratio is varied, ther…
Fractal dimension of premixed flames in multifractal turbulence
Amitesh Roy, R I Sujith
In turbulent premixed flames, the fractal dimension of flame iso-surface is argued to be for Damköhler's large-scale limit and for Damkö…
Flame dynamics during intermittency and secondary bifurcation to longitudinal thermoacoustic instability in a swirl-stabilized annular combustor
Amitesh Roy, Samarjeet Singh, Asalatha Nair +2
In this experimental study on a laboratory-scale turbulent annular combustor with sixteen swirl-stabilized burners, we study the flame-flame and flame-acoustic interactions during…