新型渦流量計における渦放出の数値シミュレーション

概要

論文の詳細を見る
In order to measure velocities in low flow-rate flows, a new small vortex flowmeter has been developed. A shape of a vortex shedding body is not two-dimensional. Characteristics of the flowmeter are studied with the numerical simulation technique. Under conditions of three-dimensional, unsteady, incompressible and laminar flows, velocity fields are analyzed by the software (FLUENT) of the finite volume method (FVM). Reynolds number and Strouhal number are defined with characteristic velocity and length as the velocity near the vortex shedding body and the width of the body. The Strouhal numbers are constant of the value 0.15 in the Re=959 to Re=11,986 range. For flow visualization experiment, a model of the flowmeter which size is ten times as large as that of the new flow meter is made. The Strouhal number from the flow visualization coincides completely with those from the numerical simulation.
2010-09-30