کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1741524 1521786 2008 13 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic and transport properties in non-equilibrium argon, oxygen and nitrogen thermal plasmas
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Thermodynamic and transport properties in non-equilibrium argon, oxygen and nitrogen thermal plasmas
چکیده انگلیسی

Thermal plasma processes and devices have been extensively studied and designed using modeling approach in the last two decades. Still, knowledge of thermodynamic and transport properties is one of the major needs in the modeling of thermal plasma processes. Computation of these properties is usually carried out through the approximated solution of the Boltzmann's equation using the Chapman–Enskog's method. While local thermodynamic equilibrium (LTE) was assumed in the past calculations, the development and use of more sophisticated plasma diagnostics have shown that this assumption often fails in thermal plasmas: for thermal non-equilibrium plasmas, the kinetic electron temperature Te is then assumed to be different from that of heavy species Th, chemical equilibrium being achieved. Non-equilibrium thermodynamic and transport property calculations of argon, nitrogen and oxygen plasmas at atmospheric pressure for electron temperature up to 45,000 K are here presented. Transport properties have been obtained using numerical codes developed by the authors which implement the Devoto's electron and heavy particles decoupling approach. Variation of composition, specific volume, specific enthalpy, specific heat, thermal conductivity, electrical conductivity and viscosity as a function of electron temperature and different degrees of non-equilibrium are reported. Results are compared with available data from published reports to check the accuracy of the developed codes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 50, Issue 8, November 2008, Pages 921–933
نویسندگان
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