管内差圧を利用した非定常流遊および流速の実時間測定法

概要

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This paper presents approximate functions of the transfer functions among the pressure gradient, the mean flow velocity and the centerline velocity in axially symmetrical laminar flow, and a new real time measuring method of unsteady flow rate and velocity by the use of an analog electronic circuit whose transfer characteristic is equivalent to the approximate function. Approximate functions are simple but highly precise, and so the analog electronic circuits equivalent to them can be made easily. The unsteady flow rate and the centerline flow velocity obtained from the measured value of pressure difference in the pipe by the use of the analog electronic circuit had a good agreement with the results of numerical calculation and the measured value by LDA. The method presented in this paper makes simple but precise measurements of unsteady flow rate and velocity possible, and is very useful for practical application.
社団法人日本機械学会の論文
1986-08-25