透過性撹乱を用いた円管内流れの制御(G05-5 内部流れ・境界層(1),G05 流体工学部門一般講演)

概要

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The response of a fully developed pipe flow to an attached ring-type manipulator of rectangular cross section with permeability was investigated by measuring the mean velocity profiles. The ring-type element has a height of 0.14 times the pipe radius and was installed rigidly in 100mm diameter, smooth-walled, circular pipe in which the air was flowing at Reynolds number of 6.2×l0^4. It had many holes of 2mm in diameter with side wall, and the results were in comparison with those using of the non-permeable ring. The results indicate that the response of mean flow field show small change and pressure loss is decreased due to the existence of the permeated flow through the ring. Therefore, relaxation process is mild in comparison with the non-permeable ring.
2004-09-04