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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18084
Title: Detection of boiling liquid levels by decomposition of acoustic waves measured using a waveguide
Authors: Singh S.
Mohanty A.R.
Gibbs B.
Published in: Proceedings of 24th International Congress on Sound and Vibration, ICSV 2017
Abstract: In industrial systems at many instances processes require knowledge of the level of hot bubbling liquid in a closed vessel. However, many a times conventional instrumentation is unsuitable since the temperatures are extremely high, and/or the chemical processes generate poisonous gases. This paper proposes a method to detect such boiling liquid levels by remotely monitoring the boiling/bubbling noise in the vessel using a waveguide. The principle of this method is that the resonance of the air mass in the closed vessel would change with change in the liquid height, which would change the resonant frequencies of the waves generated in the vessel. These waves could be captured by decomposition in a waveguide coaxially attached to the vessel, and the resultant incident wave spectrum would show peaks at frequencies as a function of the liquid height. The proposed method was verified through finite element simulations and experiments of boiling water in a closed cylindrical vessel to which a waveguide was coaxially attached at the top. Results show that different boiling water levels resulted in different resonant frequencies of the decomposed incident wave corresponding to the water height. Thus, this waveguide system can remotely monitor boiling liquid levels based on the incident wave frequency and amplitude. Such a system has wide industrial applications, particularly in steel making industry where knowing the amount of molten steel during oxygen lancing faces many challenges.
Citation: Proceedings of 24th International Congress on Sound and Vibration, ICSV 2017, (2017)
URI: http://repository.iitr.ac.in/handle/123456789/18084
Issue Date: 2017
Publisher: International Institute of Acoustics and Vibration, IIAV
Keywords: Boiling liquid
Resonance
Wave decomposition
Waveguide
Author Scopus IDs: 56215217100
7102044449
Author Affiliations: Singh, S., Indian Institute of Technology Kharagpur, Department of Mechanical Engineering, Kharagpur, West Bengal, India
Mohanty, A.R., Indian Institute of Technology Kharagpur, Department of Mechanical Engineering, Kharagpur, West Bengal, India
Appears in Collections:Conference Publications [ME]

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