粘弹性二元流体的Rayleigh-Taylor不稳定性
Rayleigh--Taylor instability in a viscoelastic binary fluid
摘要：
采用Oldrophil-B粘弹性模型研究了聚合物添加剂对不混溶流体Rayleigh-Taylor（RT）不稳定性的影响。利用相场方法得到的分析结果表明，在聚合物溶液中的不稳定性的增长速度与弹性加快（但仍然比纯溶剂的情况下慢）。粘弹性二元流体模型的数值模拟证实了这一点。
英文摘要：
The effects of polymer additives on Rayleigh--Taylor (RT) instability of immiscible fluids is investigated using the Oldroyd-B viscoelastic model. Analytic results obtained exploiting the phase-field approach show that in polymer solution the growth rate of the instability speeds up with elasticity (but remains slower than in the pure solvent case). Numerical simulations of the viscoelastic binary fluid model confirm this picture.
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