G0501-6-3 排出管吐出口を水面下に配置した遠心送風機配管系の圧力脈動 : 配管形状の影響(回転機械)

概要

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The purpose of this study is to examine the characteristic of the pressure pulsation in a centrifugal blower pipe line with the discharge opening below the water surface. The effect of the piping system on the pressure pulsation was studied experimentally. The pressure and the flow rate in the pipe line were measured for various parameters such as the depth of the discharge opening and the number of revolution for the blower. The conclusions are as follows. The dominant frequency obtained by the experiment agrees qualitatively with that obtained by the modified Helmholtz frequency involving the volume of the exhaust duct as the depth of the discharge opening is deep. The fluctuation of the air-water interface becomes the oscillation resource, and the shape of the pipe line at the discharge opening affects the characteristics of the pressure pulsation.
社団法人日本機械学会の論文
2009-09-12