INSTALLATION FOR CUETTE TYPE CURRENT MODELING AND THERMOANEMOMETER SENSOR CALIBRATION METHOD IN INSTALLATION FOR CUETTE CURRENT MODELING Russian patent published in 2018 - IPC G09B23/12 G01P21/00 G01P5/12 

FIELD: physics.

SUBSTANCE: invention relates to an experimental technique in the field of fluid and gas mechanics and can be used to study the structure of Couette-type currents and to calibrate thermal anemometer sensors in Couette-type structures. Couette type flow simulator includes a sealed housing and a rotating cylinder mounted therein, forming a closed flow channel with the walls of the housing, while from one diametrically opposite side of the cylinder the channel has a constant section in which the sensor of the thermoanemometer is placed, and on the other on the diametrically opposite side of the cylinder, the channel has a variable cross-section and forms a chamber. Wall of the cylinder and the wall of the housing in the region of the channel of constant section are made with the possibility of varying the degree of roughness, permeability and change in the thermal regime by changing the temperature of the walls of the channel of constant cross section. Method for calibrating the sensor of a thermal anemometer in the turbulent mode of Couette flow involves the installation of a sensor at a distance ½ of the width of the channel of constant cross section, where the flow velocity is equal to half the circumferential velocity of the surface of the rotating cylinder, the readings of the thermoanemometer are recorded with a repeated change in the flow velocity in the channel and determine the dependence of the voltage change on the sensing element of the thermo-anemometer sensor when the flow rate is changed.

EFFECT: expansion of experimental capabilities, namely the possibility of modeling and studying structures of the Couette type by measuring instruments, for example a thermoanemometer, in media with a wide range of pressures and densities, in a wide range of working gases, as well as for different values of wall roughness, heat transfer from the walls to the flow, and varying degrees of wall permeability.

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