円管内脈動入口流れにおけるスラグの挙動と速度場

概要

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This paper describes the characteristics of a turbulent slug and the velocity field in the inlet region for a pulsatile pipe flow. Experimental conditions of the present study were arranged systematically as to pulsation frequency and velocity amplitude ratio A_1. The experimental results about the onset of a turbulent slug, the propagation behavior of the slug, and the distributions of velocity and turbulence intensity inside the slug were compared with those for a turbulent patch in a pulsatile boundary layer on a flat plate. A close analogy was shown between them. When A_1 is smaller than 0.608, the velocity distribution for the laminar region outside a slug was approximated by an analytical solution previously presented for a pulsatile laminar flow with smaller A_1.
社団法人日本機械学会の論文
1986-07-25