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围油栏前压力垂直结构对油水界面稳定性的影响

LIU Cheng,SHEN YongMing,LIANG Yan

Scientia Sinica(Physica,Mechanica & Astronomica)（2011）

Cited 5|Views11
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Abstract
油水界面不稳定是围油栏失效的主要原因.该文采用油水二维湍流模型,基于PLIC-VOF(Piecewise Linear Interface Construction-Volume of Fluid)方法模拟油水界面运动,以油水密度比值、水流流速、围油栏吃水深度和油的运动黏度为参数,研究了围油栏前压力梯度的变化及其对油水界面稳定性影响的规律.研究结果表明围油栏前压力垂直结构直接决定了油水界面稳定性;临界压力梯度作为判断油水界面稳定性的标准在多数情况下都是很有效的,但是由于没有考虑运动黏度的影响,当运动黏度小于0.15cm2s-1时,不能再运用临界压力梯度标准判断油水界面稳定性.
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Key words
plic-vof,oil slick,drainage failure,instability of the oil-water interface,oil-water turbulence model,instability criterion,pressure gradient
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