نتایج جستجو برای: constant wall temperature

تعداد نتایج: 806907  

1999
A. Villares Ferrer A. O. Caldeira

We have studied the problem of the dissipative motion of Bloch walls considering a totally anisotropic one dimensional spin chain in the presence of a magnetic field. Using the so-called “collective coordinate method” we construct an effective Hamiltonian for the Bloch wall coupled to the magnetic excitations of the system. It allows us to analyze the Brownian motion of the wall in terms of the...

2011
Ting Wang Lei Zhao

In film cooling experimental studies, due to the difficulty in measuring the surface heat flux variation, a Heat Flux Ratio (HFR) equation originally derived by Mick and Mayle [1], has been widely employed to calculate the surface heat flux distribution using the measured adiabatic film effectiveness and surface temperature. A close examination of the derivation process and applications of the ...

The behavior of the flow between two coaxial conical cylinders with the inner one rotating and the outer one stationary is studied numerically. The angular velocity of the inner cone cylinder was raised step by step from the rest until reaching its final speed. In this work we first present a numerical simulation of the flow characteristics and the heat transfer mechanism of a fluid in the spac...

2004
Kamil Wichterle

Flow and thermal convection in heat exchangers can be affected by variations in viscosity. In circular pipes the significance of this effect was expressed by Sieder and Tate’s empirical formula. Similar correction can be derived for other heat transfer problems. Exact solutions for heat transfer during the non-isoviscous laminar flow of Newtonian and non-Newtonian liquids in circular and flat d...

The Galerkin weighted residuals method is extended solve the laminar, fully developed flow and heat transfer of Al2O3-water nanofluid inside polygonal ducts with round corners for the constant heat flux and uniform wall temperature boundary conditions. Using the method, semi-analytical, closed-form solutions are obtained for the friction coefficient and the Nusselt number in terms of the radius...

2004
Dinesh K. Prabhu

H : specific total enthalpy α : angle of attack h : specific static enthalpy β : sideslip (yaw) angle J r : mass diffusion flux vector γs : recombination coefficient L : characteristic length ∆s : wall-normal grid spacing M : Mach number or molar mass ε : emissivity n : unit normal κ : gas mixture thermal conductivity p : Pressure μ : gas mixture viscosity Q : heat load σ : Stefan-Boltzmann con...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید