1317 チャネル壁面からのポリマー滲出による抵抗低減流れにおけるポリマーの乱流拡散と抵抗低減との関係(OS13-3 流れの抵抗低減,オーガナイズドセッション)

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  • 1317 Experimental Investigation on Turbulent Diffusion of Polymer for the Drag Reducing Channel Flow with Blowing Polymer Solution from the Wall

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Experimental investigation on turbulent diffusion for drag reducing channel flow with blowing polymer solution from the whole surface of channel wall was performed. We measured polymer concentration distribution qualitatively and quantitatively by two methods. Qualitative measurement is by Planer Laser Induced Fluorescence (PLIF). On the other hand, quantitative measurement is that liquid sample was extracted from the channel at three different locations by the sample probe and polymer concentration of this test liquid was directly measured by Total Organic Carbon (TOC) analyzer. Based on these experimental results, relation between turbulent diffusion of polymer solution blown from the wall and heterogeneous drag reduction was discussed.

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