3822 軟らかい管が硬い管の非定常流れに及ぼす影響(J15-2 流体関連の騒音と振動(2)-管内流れ-,J15 流体関連の騒音と振動,2005年度年次大会)

概要

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Experimental and numerical study was done to confirm the effect of the flexible tube in pipeline on transient flow oscillation. Experiment was made for a pipeline with and without deformable flexible tube usin g a single pumping system of main stainless pipe. The wave speeds of main pipe and flexible tube were calculated from the pipe material properties, structures, and boundary conditions. Time dependent pressure fluctuations were calculated for the pipeline using the simple and Kelvin-Voigt viscoelastic models for the deformation of main pipe and flexible tube. Pressure calculated by the Kelvin-Voigt viscoelastic model showed a better agreement with measured one than pressure by the simple model. Experimen tal and numerical results show that the maximum pressure as well as amplitude of pressure oscillation was decreased by inserting short flexible tube in pipeline. Hence, the insert of short flexible tube to pipeline was found to be effective for the suppression of strong pressure oscillation. Moreover, the wave speed in pipe was discussed based on numerical and experimental results.
一般社団法人日本機械学会の論文
2005-09-18