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In the previous research, the authors have been proposed a unique flowmeter, which utilizes a lateral flow force generated on the plate with minute slope in a rectangular flow line. In the previous works, the test flowmeter was investigated experimentally to confirm the torque versus flow characteristics. Although the results showed expected performance in terms of linearity and repeatability, the deviation between the experimental and analytical results occurred on the high flow rate condition. Then the theoretical analysis using the CFD approach was conducted to obtain the detailed information of the flow behavior inside the flowmeter. It was found that one of the reasons for this deviation was caused by the remarkable pressure drop and flow disturbance at the inlet region of the flowmeter. In this paper, in order to improve the performance of the present flowmeter, the revised configuration of the flowmeter is proposed. Basic static characteristics are studied experimentally including the measurement of pressure distribution inside the flowmeter to verify the performance of the revised configuration. In addition, the dynamic characteristics are also investigated and compared with commercial flowmeters.

nihon kikai gakkai ronbunshū. b

Evaluation and Improvement of Basic Characteristics on the Flowmeter Utilizing Lateral Flow Force Acted on the Stationary Plate with Minute Slope in a Rectangular Fluid Line