Open AccessTheoretical substantiation of the principle of operation of the rod flow meter of irrigation canals
Author(s) -
А А Пахомов,
E A Khodyakov,
Viktor Bocharnikov,
Valentin Grin',
Н. А. Колобанова,
Е С Воронцова
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/965/1/012006
Subject(s) - operability , mechanics , metre , flow measurement , flow (mathematics) , lattice (music) , hydraulics , magnetic flow meter , mathematics , physics , engineering , thermodynamics , acoustics , astronomy , reliability engineering
The paper presents a theoretical substantiation of the developed design of a rod flow meter for open canals of irrigation systems. The design features of the lattice elements are revealed, the methods of their hydraulic calculation are given. It was found that the lattices were not used as sensitive elements for measuring water flow rates. A feature of the hydraulic calculation of lattice elements is that it is necessary to take into account the following pressure losses: from the degree of restriction of the living section of the flow, from the ratio of the rod width to the size of the gap, from the rod width, from the rod thickness, from the shape of the cross section of the rod. The operability of the proposed flow meter is theoretically substantiated. It is found that with a significant change in the angle α of the lattice deviation, the degree of tension of the elastic element (angle β) increases by 1-3% from the nominal position. An analytical dependence for determining the value of the hydrodynamic pressure is also obtained.