Open AccessTHE ANALYSIS OF A NEW PHYSICAL METHOD FOR MEASURING THE FLUID MASS FLOW RATE AND DENSITY
Author(s) -
Oleg V. Zhiliaev,
Vladislav N. Kovalnogov
Publication year - 2020
Publication title -
avtomatizaciâ processov upravleniâ
Language(s) - English
Resource type - Journals
ISSN - 1991-2927
DOI - 10.35752/1991-2927-2020-3-61-21-30
Subject(s) - mass flow meter , flow (mathematics) , volumetric flow rate , mechanics , pipeline (software) , mass flow , mass flow rate , flow measurement , harmonic , process (computing) , fluid dynamics , computer science , calculus (dental) , mathematics , physics , acoustics , medicine , dentistry , programming language , operating system
This paper gives the preliminary analysis of a new physical method of measuring the fluid’s mass flow rate and density which has been discovered by other authors. The need for exploration and development of the method is defined by its advantages in comparison with other currently existing systems for mass flow rate measuring such as Coriolis flowmeter. The new physical method under consideration is based on measuring the alternating pressure difference which would occur along the flow due to harmonic oscillations of the cross-section area of the pipeline which has flexible walls. It is shown that the new physical method gives the opportunity of simultaneous measurement of mass flow rate and liquid’s density. A mathematical model of the process of non-stationary flow of a liquid is built. The problem of non-stationary flow of a liquid is considered and solved as to be one-dimensioned one. The detailed and thorough derivation of the formulae of the mathematical model is performed. Some inaccuracies in formulae permitted by authors of the method are indicated at. The limitations in applicability of the method which had been indicated at by its authors are also essentially weaken. The theoretical examination and approval of conclusions about the applicability of the new method are made.