Robust design method to improve the accuracy of an oval flowmeter

摘要

The present invention relates to an optimum design method for improving the accuracy of an oval flowmeter by deriving main design variables of the oval flowmeter. According to the present invention, the larger the viscosity of a fluid, the width of a gear, the width of a gear tip, and a ratio of a major axis to a minor axis of the gear (a/b) and the smaller clearance, the smaller accuracy deviation at a small flow rate and at a large flow rate.