Experimental Research on Flow Coefficient of Flow Equation of Metal Rotameter
Su Feng, Zhang Tao
Abstract:
On the basis of analyzing flow equation for rotameter, using the flow standard device with master meter method, the rotameter with one type of floater chosen from two different floaters in shape and metal tube from 25 mm caliber to 100 mm caliber had been calibrated. After calculating and analyzing curve between flow coefficient and Reynolds Number (α ~ Re) of metal rotameter, some laws are founded. Within the upper limit flow rate of metal rotameter, flow coefficient does not tend towards a constant number. Under the double logarithmic coordinate, relation curve of large capacity metal rotameter between flow coefficient and Reynolds Number (α ~ Re) is near to linearity, and the approximate expression reflecting this kind of relationship is deduced.
Keywords:
Metal rotameter, flow equation: flow coefficient, Reynolds number
