论文标题
可压缩性和润湿对液体蒸气过渡的影响
Effects of compressibility and wetting on the liquid-vapor transition in a confined fluid
论文作者
论文摘要
当将流体限制为固定的有限体积时，液体蒸气平衡的条件与无限体积或恒压案例不同。即使有一系列的密度，也无法形成气泡，并且在大块饱和蒸汽压力下方的压力下的液体仍然无限期保持稳定。由于矿物质夹杂物中的流体密度通常来自气泡消失的温度，因此需要对有限体积效应进行校正。以前的作品解释了这些现象，并提出了一种数值程序，以计算完全通过液相湿润的容器中纯净水的校正。在这里，我们重新审视这些作品，并提供对任何流体和包括部分润湿的情况有效的分析配方。我们介绍了Berthelot-Laplace长度$λ=2γκ/3 $，它结合了液体等温可压缩$κ$及其表面张力$γ$。定量效应由单个非二维参数完全捕获：$λ$与容器大小的比率。
When a fluid is constrained to a fixed, finite volume, the conditions for liquid-vapor equilibrium are different from the infinite volume or constant pressure cases. There is even a range of densities for which no bubble can form, and the liquid at a pressure below the bulk saturated vapor pressure remains indefinitely stable. As fluid density in mineral inclusions is often derived from the temperature of bubble disappearance, a correction for the finite volume effect is required. Previous works explained these phenomena, and proposed a numerical procedure to compute the correction for pure water in a container completely wet by the liquid phase. Here we revisit these works, and provide an analytic formulation valid for any fluid and including the case of partial wetting. We introduce the Berthelot-Laplace length $λ=2γκ/3$, which combines the liquid isothermal compressibility $κ$ and its surface tension $γ$. The quantitative effects are fully captured by a single, non-dimensional parameter: the ratio of $λ$ to the container size.
