کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1757693 1523015 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamics phase changes of nanopore fluids
ترجمه فارسی عنوان
تغییرات فاز ترمودینامیکی مایعات نانوپور
کلمات کلیدی
تغییر فاز، مایع محصور، نانوپور، معادله ون د والس، شیوه انتقادی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی


• van der Waals equation is modified.
• The original energy and volume parameters are used.
• Results show critical shifts of temperatures and pressures.
• Results are compared with molecular simulations and experimental data.

The van der Waals (vdW) equation (Eq.) is modified to describe thermodynamic of phase behavior of fluids confined in nanopore. Our aim is to compute pressures exerted by the fluid molecules and to investigate how they change due to pore proximity by assuming the pore wall is inert. No additional scaling of model parameters is imposed and original volume and energy parameters are used in the calculations. Our results clearly show the phase changes due to confinement. The critical shifts of temperatures and pressures are in good agreement compared to the laboratory data and molecular simulation. Peng-Robinson (PR) equation-of-state (EOS) has resulted in different effect than the vdW. This work delivers insights into the nature of fluid behavior in extremely low-permeability nanoporous media, especially in the tight shale reservoirs, below the critical temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Natural Gas Science and Engineering - Volume 25, July 2015, Pages 134–139
نویسندگان
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