An experimental study of the dependence of the discharge coefficient front pressure differential devices - orifice plate and nozzle in the range of Reynolds number Re=2,5´10 4 - 4´10 5 and beta ratio β=0,4 - 0,75. Experiments were carried out on the state of the reference facility Eu-2 State primary standard of mass and volume flow GET-118 FGUP VNIIR. It is shown that the dependence of the coefficient discharge used to calculate the standard pressure differential devices give less accuracy when calculating the front pressure differential devices.
торцевое СУ, диафрагма, сопло, коэффициент истечения, математическое моделирование, модели турбулентности, эталонная установка, turbulence model, front pressure differential device, orifice plate, nozzle, discharge coefficient, reference plant, mathematic modeling
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