Indian Institute of Technology Madras

Raman Pillai Indusekharan Nair Sujith

Vishnu Rajasekharan Unni

Induja Pavithran

Praveen Kasthuri

Alan John Varghese

Embodiments herein provide a system () to estimate the amplitude of oscillations in a turbulent flow system () that exhibits oscillatory instabilities. The system () comprises of a sensor (A) mounted on the turbulent flow system () to detect an oscillatory variable in the system obtaining a signal, a signal conditioner () that conditions the signal from the sensor, an amplitude estimator () that estimates the amplitude of the limit cycle oscillations, and also predict the proximity of the system to the oscillatory instability, a processor () connected to the amplitude estimator () to compare the predicted oscillation amplitude with a threshold value. The amplitude is estimated by estimating the spectral measure of the time series signal obtained from the system.

System and method for determining the amplitude of oscillatory instabilities in fluid mechanical devices

A system for early detection of onset of oscillatory instabilities in practical devices is described. The system consists of a measuring device (), an instability detection unit () and a control unit (). The measuring device () is configured to generate signals corresponding to the dynamics happening inside the practical device. The instability detection unit () along with an amplitude estimation unit () is configured to diagnose the stability of the practical device from the signals that are generated by the measuring device (). Further, the control unit () is configured to control various operating parameters in the practical device based on the information obtained from the instability detection unit ().

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Chennai, India

Raman Pillai Indusekharan Nair Sujith