A Study on the Flow Coefficient Characteristic Curve of Venturi Tube Flowmeter at Low Reynolds Numbers
Under the conditions specified in 5.5.2 of GB/T 2624,the flow out coefficient of the classical Venturi tube in the"cast"contraction section is 0.984.When the Reynolds number is less than the specified conditions,the flow out coefficient is unknown.This article designs a flow measurement test bench with the aim of repeatedly simulating low Reynolds number operating conditions,calculating the flow coefficient of the classic Venturi tube in the"cast"contraction section,and verifying its stability and repeatability,which is only a reference in practical applications.
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