Vishnu R. Unni

TL;DR: A first principles model that connects respiratory droplet physics with the evolution of a pandemic such as the ongoing Covid-19 is developed and the firm theoretical underpinning that connects the two scales—macro-scale pandemic dynamics and micro-scale droplets physics—thus could emerge as a powerful tool in elucidating the role of environmental factors on infection spread through respiratory droplets.

TL;DR: A model is developed that tries to explain and describe the temperature and relative humidity sensitivity of respiratory droplets and their possible connection in determining viral outbreaks, and determines the droplet evaporation time that determines the infection rate constant.

TL;DR: In this article, the authors discuss various prognosis and mitigation strategies for thermo-acoustic instability based on complex system theory in turbulent combustors, where the authors view the thermoacoustic system in a turbulent combustor as a complex system and the dynamics exhibited by the system is perceived as emergent behaviors of this complex system.

TL;DR: In this article, the authors show that the onset of thermoacoustic instability is a phenomenon of mutual synchronization between the acoustic pressure and the heat release rate signals, thus emphasizing the importance of the coupling between these non-identical oscillators.

TL;DR: In this paper, the authors present the spatiotemporal dynamics during the transition from combustion noise to limit cycle oscillations in a turbulent bluff-body stabilized combustor, where they acquire the pressure oscillations and the field of heat release rate oscillations through high-speed chemiluminescence ( ) images of the reaction zone.