OPTIMIZATION OF SPATIAL FORM OF STREAMLINE BODIES OF SENSING ELEMENTS IN HYDRODYNAMIC LIQUID FLOW MEASURING TRANSDUCERS

Abstract

Issues of selection of spatial geometric form of streamline bodies of sensing elements in hydrodynamic liquid flow measuring transducers were discussed basing on proposed integrated criterion of estimation. This criterion is grounded on effective interaction of measuring flow with transducer sensing element and gives high sensitivity of the system along with measuring accuracy at minimum impact on kinematic flow characteristics. Design objectives of form of streamline bodies of sensing elements in hydrodynamic liquid flow measuring transducers, their geometric forms and spatial arrangement regarding incoming flow have been determined. Main classes of streamline bodies which are used in flowmeters were investigated. Rational geometric forms of mentioned bodies and their spatial arrangement relatively to flow velocity vector, which create real background of synthesis of hydrodynamic flow measuring transducers with improved performance were analyzed. Keywords: measurement, flow rate, liquid, measuring transducers, optimization, sensing elements.