We study the heat generation in a nanodevice with an electric current passing through the device. A general formula for the heat generation is derived by using the nonequilibrium Keldysh Green's functions. This formula can be applied in both the linear and nonlinear transport regions, for time-...
For other geometries, the general formula (20.39) holds, but the characteristic length is replaced by a hydraulic diameter de = 4 × (cross-sectional area for flow)/(wetted perimeter). For fully turbulent regime in pipes, Re should be larger than 104. The hydraulic design should be such ...
The free energy of a quantum oscillator in an arbitrary heat bath at temperature T is given by a "remarkable formula" which involves only a single integral... GW Ford,RF O’Connell - Physica E: Low-dimensional Systems and Nanostructures 被引量: 43发表: 2005年 Perturbative treatment of inter...
Also we point out that for systems with anomalous heat transport, as is the case in low-dimensional systems, the use of the standard Green-Kubo formula is problematic and the open system formula should be used. 展开 关键词: transport processes/heat transfer (theory heat conduction ...
So, the ultimate influence of convection on production should be discussed in future. Irani and Ghannadi discussed the performance of SAGD process with a higher injection pressure which was based on water flow normal to interface (Irani and Ghannadi, 2013). They derived a new formula which ...
PURPOSE: To obtain a new N-acylarylsulfonamide useful as a stabilizer of highly sensitive heat-sensitive sheet excellent in heat resistance, water resistance and oil resistance. ;CONSTITUTION: An N-acyl-arylsulfonamide of the formula (R<Sub>1</Sub> to R<Sub>6</Sub> are H, 1-4C alkyl,...
uncertainty and weaker effects at the global scale. To take into account indoor heat exposures for industrial and service sector workers, we used the approximation that indoor WGBTindoor = WBGToutdoor − 4, based on a deduction of the radiation exposure factor from the formula below18...
By plugging this expressions into the lengthy formula that results from applying Wick’s theorem to the integrand of Eq. (1) and performing the time integral, after some cumbersome but straightforward algebra we get Eq. (3). A full derivation of Eqs. (3–5) is presented in the ...
The source term 𝑆𝐿SL in the energy formula is calculated as follows [61]:𝑆𝐿=𝜌∂𝜆𝐿𝑓∂𝑡+𝜌∇(𝑉→𝜆𝐿𝑓)SL=ρ∂λLf∂t+ρ∇(V→λLf) (7) The thermal energy released rate (solidification rate) through the discharge process is then defined as [...
[53] proposed a linear formula for specific heat capacity using numerical simulation technique. Test data from thermal conductivity and temperature from specimen centre was used for temperature simulation. Specific heat capacity ranges by both researchers are different but both have increasing trends. ...