Abstract
A unique flowmeter has been newly developed based on the principle that the distribution of the pressure difference acted on a stationary tapered body, which is eccentrically installed parallel to a fluid line. This resulted in generation of torque around the center of the tapped bodies, and a voltage output as proportional to the flow rate. The proposed flowmeter features a simple structure, low pressure-loss and no moving parts. In this paper, analytical theory on the two-dimensional viscous flow is conducted in respect to two kinds of the flowmeter having rectangular and circular configurations, respectively. Consequently, the rectangular type of the flowmeter is employed due to high flow rate versus torque gain. The design specification and parameters are determined by analytical solutions. Finally, the theoretical static characteristics of the flow rate versus torque and pressure loss are experimentally verified by changing the fluid viscosity and design parameters.
