Development of non-intrusive techniques for cantilever-based flow sensing
Date23rd Nov 2023
Time11:00 AM
Venue ONLINE (meet.google.com/xsc-bjsu-evx)
PAST EVENT
Details
Water flow measurements are essential in a water supply system for the optimal use of the water and the associated energy. The choice of a flow meter depends on the specific application and is based on various factors. Even though highly sophisticated water flow sensors exist, most existing non-intrusive flow meters are expensive for residential and irrigation applications and have limited performance for low flow velocity measurements. There is a demand for affordable flow sensors with sufficient accuracy, particularly in the residential and irrigation sectors. Cantilever-based flow sensors have been reported, mainly for microfluidic applications. Evaluating cantilever-based sensors in large-diameter pipes under turbulent flow is very important to explore the potential application of such sensors. In this talk, non-intrusive sensing mechanisms for the cantilever-based flow sensor will be presented. The proposed sensor is realized by considering a stainless steel cantilever as the sensing element. The cantilever is introduced perpendicular to the flow. The cantilever bends as a function of the flow. The bending angle of the cantilever is sensed with the help of two non-intrusive transduction mechanisms, mainly the capacitive and inductive-based sensing mechanisms, which are widely used for position sensing. Finite-element analysis was used to design the sensor. A sensor prototype and the measurement set-up were built and tested in the laboratory. The prototype sensor is intended for a 0-7 m³/hr flow rate. Its accuracy was found to be 3%. The proposed sensor offers significantly reduced complexity compared to existing flow monitoring systems; the bending angle sensing mechanism is non-intrusive, requires little maintenance, detects flow direction, and can be designed to measure flow rates for the range of interest. The findings, as well as the comparison with existing sensors, will be discussed in detail.
Speakers
Ms.HARIJA HARIKUMAR (CH16D302)
DEPT. OF CHEMICAL ENGINEERING