Patents by Inventor ABIN KRISHNAN

ABIN KRISHNAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11859816
    Abstract: Various kinds of oscillatory instabilities are seen in practical systems. We devise of way of combating these oscillatory instabilities in a thermoacoustic system. Confined combustion environments are prone to large amplitude pressure oscillations known as thermoacoustic instabilities. Although several techniques have been employed to control or mitigate such instabilities, optimization of these methods is achieved at the cost of performing multiple trial and error experiments/simulations. This invention develops a methodology to quantify the spatio-temporal dynamics using synchronization, recurrence, and fractal measures and find the coherent region in such turbulent flow field. Such an analysis provides us with a novel way to detect critical regions responsible for thermoacoustic instability, and other oscillatory instabilities in general, in the flow field and implement an optimized control strategy at these regions.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: January 2, 2024
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY, MADRAS (IITM)
    Inventors: Sujith Raman Indusekharan Pillai Nair, Krishna Manoj, Samadhan Ananda Pawar, Abin Krishnan, Midhun Palakkal Raghunath, Reeja Kunnathu Valappil, Manikandan Raghunathan, Amitesh Roy
  • Publication number: 20210095848
    Abstract: Various kinds of oscillatory instabilities are seen in practical systems. We devise of way of combating these oscillatory instabilities in a thermoacoustic system. Confined combustion environments are prone to large amplitude pressure oscillations known as thermoacoustic instabilities. Although several techniques have been employed to control or mitigate such instabilities, optimization of these methods is achieved at the cost of performing multiple trial and error experiments/simulations. This invention develops a methodology to quantify the spatio-temporal dynamics using synchronization, recurrence, and fractal measures and find the coherent region in such turbulent flow field. Such an analysis provides us with a novel way to detect critical regions responsible for thermoacoustic instability, and other oscillatory instabilities in general, in the flow field and implement an optimized control strategy at these regions.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 1, 2021
    Inventors: Sujith Raman Indusekharan Pillai Nair, Krishna Manoj, Samadhan Ananda Pawar, Abin Krishnan, Midhun Palakkal Raghunath, Reeja Kunnathu Valappil, Manikandan Raghunathan, Amitesh Roy
  • Patent number: 10895382
    Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: January 19, 2021
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Vishnu R. Unni, Sujith Ramanpillai Indusekharan Nair, Abin Krishnan, Norbert Marwan, Jürgen Kurths
  • Publication number: 20190264916
    Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Inventors: VISHNU R. UNNI, SUJITH RAMANPILLAI INDUSEKHARAN NAIR, ABIN KRISHNAN, NORBERT MARWAN, JÜRGEN KURTHS