Crossover Carnhan starling equation of state
محل انتشار: هجدهمین همایش شیمی فیزیک ایران
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 464
متن کامل این مقاله منتشر نشده است و فقط به صورت چکیده یا چکیده مبسوط در پایگاه موجود می باشد.
توضیح: معمولا کلیه مقالاتی که کمتر از ۵ صفحه باشند در پایگاه سیویلیکا اصل مقاله (فول تکست) محسوب نمی شوند و فقط کاربران عضو بدون کسر اعتبار می توانند فایل آنها را دریافت نمایند.
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISPTC18_008
تاریخ نمایه سازی: 5 بهمن 1395
چکیده مقاله:
Accurate extrapolations of fluid phase behavior of pure fluids and mixtures, especially nearthe critical point, are very important for many process technologies and product design invarious industries. As commonly accepted, because of the asymptotic nature of singularbehavior of fluids in the immediate region of the critical point, the thermodynamic propertiesof different systems in the same universality class behave as 3D-Ising model. Hereupon,widely efforts have been made for the development of better thermodynamic representations,such as cubic equation of state. Despite of their simplicity of calculation and their remarkablepredictive capabilities over a wide range, these classical models did not gave very accurateprediction for the thermodynamics properties of fluids near the critical region.In this paper, we use a theoretical approach to correct Carnhan starling equation of state(EoS) for the effects of critical fluctuations. The approach utilizes a transformation deducedfrom the renormalization-group theory (RGT) of critical phenomena that was developedearlier for a classical Landau expansion of Helmholtz free energy density and successfullyuse with Kostrowicka Wyczalkowska et al. [1] to show how critical fluctuations effectedthermodynamic properties predicted with Vander Waals equation.
نویسندگان
H Cheshmpak
Department of Physical Chemistry, School of Chemistry, University College of Science, University of Tehran, Tehran 14155, Iran
H Behnejad
Department of Physical Chemistry, School of Chemistry, University College ofScience, University of Tehran, Tehran 14155, Iran
A Jamali
Department of Physical Chemistry, School of Chemistry, University College ofScience, University of Tehran, Tehran 14155, Iran