A theoretical assessment of the possible impact of non-isothermal factor caused the difference in temperature controlled environment and the flow channel wall, the magnitude of the discharge coefficient flowmeter nozzle. The method of investigation is based on modern concepts of boundary layer theory. These results led to the conclusion that the neglect of this factor in some cases can lead to an error by the method of flow measurement by differential pressure of the order of 20%. The analytical expression of the adjustment function .
неизотермичность, коэффициент истечения, расходомерное сопло, измерение расхода, nonisothermal, discharge coefficient, the flow nozzle, flow measurement
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