Nu depends mainly on the heat-transfer coefficient alpha (alpha=heatflux/(Twall-Tmixed)). Due to a higher mixed temperature (with the surface average method) in the end of my duct, alpha becomes to high (approx. 6). Considering the "line average" mixed temperature it is 4.3. From my ...
Experimental local heat transfer and average friction coefficient for subsonic turbulent flow of air in an annulus at high temperature[J].Int J Heat Mass Transfer, 1966,9:1361.M. Dalle Donne and E. Meerwald, Experimental local heat-transfer and average friction coefficients for subsonic turbulent ...
Operative temperature [°C] In this study, because the bedroom shapes and window proportions vary for each participant, the convective heat transfer coefficient (αa) and the radiative heat transfer coefficient (αr) are defined as follows. α a = αr The calculation formula for OT Ave is ...
conjugated length.42–45 The gap distance between adjacent carbon fillers in a flexible polymer matrix with a large thermal coefficient becomes longer with increasing temperature, and the activation energy then becomes higher despite the predominant electron transfer via the tunneling effect with ...
Hence, each formula can be written as MathML, where c is a bulk coefficient combining surface albedo, infrared emissivity, regolith heat storage, and the SB constant. Denoting such bulk coefficients as c e and cna in equations (3) and (16) respectively, we obtain: MathML (17) and ...
1)instantaneous/average heat transfer coefficient瞬时(平均)传热系数 2)transient and time average coefficient of heat transfer瞬态与时均传热系数 3)mean thermal transmittance平均传热系数 1.This paper introduced a method to get areas of all kinds of heat bridges and the primary part of exterior walls...
Two types of boundary condition models of heat transfer have been employed in numerical simulations. The heat transfer coefficient in the first boundary condition model was calculated from the formula which takes into account the slab surface temperature and water flow rate in each secondary cooling ...
Friction coefficient depends on the sedimentation profile which can be characterized by Reynolds number Re = dpvpρ/µ. However, we can see that the sedimentation velocity we need to estimate is included in the Reynolds number formula. Therefore, the Archimedes number must be introduced to ...
where the light speed C is 299,792,458 m/s, L0 is the initial length of the optical fiber, T0 is the initial temperature of the optical fiber, T is the average temperature of the optical fiber link, 𝛼α is the thermal expansion coefficient of the optical fiber 5.6 × 10−7 K...
This is a non–conservative oscillator, where the non-linearity is introduced through its damping coefficient. It was initially used to model limit cycle oscillations in electrical circuits, but it has been applied in other fields, as well, such us seismology and neuron modeling. The QoI is the...