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arXiv 2607.02310physics.flu-dyncond-mat.stat-mech

液气共存泊肃叶流中的压降局域化与动量绝缘

Pressure-drop localization and momentum insulation in liquid-gas coexistence Poiseuille flow

Naoko Nakagawa, Shin-ichi Sasa

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中文总结 AI 辅助

研究绝热板间单组分流体在液气共存下的压力驱动泊肃叶流,通过体相方程识别极小无量纲参数,发现压差集中于界面区域且粒子流显著减弱,导致界面冷却。

中文摘要 AI 辅助

我们研究了绝热板间单组分流体在液气共存下的压力驱动泊肃叶流。该分析利用体相区域的泊肃叶流和傅里叶热传导,结合粒子和能量守恒。从这些体相方程中,我们识别出描述共存泊肃叶流的极小无量纲参数$A^\mathrm{L}$和$A^\mathrm{G}$,其微小性源于微观-宏观长度比的平方。在具有宏观液气区域的弱驱动下,压差集中在界面区域,且普通的泊肃叶粒子流被强烈抑制。对于等温储层,这种残余粒子流产生界面冷却。

英文摘要

We study Poiseuille flow of a one-component fluid between adiabatic plates in liquid-gas coexistence with a stationary interface. Using only bulk transport laws and particle and energy conservation, we identify small dimensionless parameters $A^\mathrm{L}$ and $A^\mathrm{G}$ governed by squared microscopic-to-macroscopic length ratios. In weak driving with macroscopic bulk regions and a regular interfacial temperature response, the pressure drop is concentrated across the interface, strongly suppressing the particle current. For equal-temperature reservoirs, the residual current produces interfacial cooling. Experimental feasibility is also discussed.

发表机构

  • Ibaraki University(茨城大学)
  • Kyoto University(京都大学)

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