管内流れにおける非定常諸変量間の伝達関数の近似表示

概要

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For fluid control and measurement in an unsteady pipe flow, it is useful to estimate one variable precisely from others which can be obtained briefly. This is done using the transformation calculus. In the case of laminar and axially symmetrical flow, transfer functions which relate pressure gradient, mean flow velocity and local velocity at a specified point on the same cross section of pipe contain the Bessel function. In this paper, good approximate functions of the transfer functions are obtained in the simple form of linear combination of the proportional element, the first order lag element and the element based on the second order lag element. by the use of approximate transfer functions, an efficient transformation calculus of the variables in unsteady pipe flow can be realized.
社団法人日本機械学会の論文
1985-12-25