نتایج جستجو برای: dufour number
تعداد نتایج: 1168848 فیلتر نتایج به سال:
The effects of chemical reaction, thermal stratification, Soret and Dufour numbers on magneto-hydrodynamic free convective heat and mass transfer of a viscous, incompressible,and electrically conducting fluid on a vertical stretching surface embedded in a saturated porous medium are presented. A similarity transform is used to reduce the governing partial differential equations into a syste...
Double diffusive convection in a binary viscoelastic fluid saturated porous layer the presence of cross diffusion effect and an internal heat source is studied analytically using linear nonlinear stability analysis. The theory based on normal mode technique, while minimal representation truncated double Fourier series. modified Darcy law for Oldroyd type considered to model momentum equation. o...
Abstract— Explicit Finite-Difference method was used to obtain the solution of the system of the non-linear ordinary differential equations which transform from the non-linear partial differential equations. These equations describe the steady magneto-hydrodynamic flow of an oldroyd 6-constant non-Newtonian nano-fluid through a non-Darcy porous medium with heat and mass transfer. The numerical ...
effects of some thermo-physical parameters on free convective heat and mass transfer over a vertical stretching surface at lowest level of heat energy in the presence of suction is investigated. the viscosity of the fluid is assumed to vary as a linear function of temperature and thermal conductivity is assumed constant. a similarity transformation is applied to reduce the governing equations i...
The purpose of this paper is to deal with questions of instability and economic crisis, deriving theoretical arguments from Schumpeter’s works and presenting relevant empirical evidence for the case of the US economy by sector of economic activity in the time period 19572006, just before the first signs of the global recession made their appearance. More precisely, we make an attempt to interpr...
هرگاه دو گاز مختلف که از نظر شیمیائی برهم بی اثر بوده و نیز درجه حرارت و فشار آنها یکسان باشد درهم پراکنده شوند، ایجاد اختلاف درجه حرارت میگردد. این پدیده را که اولین بار بوسیله dufour کشف گردید اثر حرارتی نفوذ (diffusion thermoeffect) یا پدیده dufour گفته میشود. مطالعه این پدیده از آن جهت حائز اهمیت است که اطلاعاتی در مورد نیروهای بین ملکولی و هم چنین ثابت های مهمی از گازها را میتوان بوسیله آن...
Explicit Finite-Difference method was used to obtain the solution of the system of the non-linear ordinary differential equations which obtained from the non-linear partial differential equations. These equations describe the twodimensional flow of a MHD third-order Nano-fluid with heat and mass transfer in a circular cylindrical tube having two walls that are transversely displaced by an infin...
this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...
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