... gas. Good accuracy can be achieved by the optimal choice of the model’s gray gas absorption coefficient and its weight by application of the absorption-line blackbody distribution functions of individual species in the mixture calculated with a high-resolution spectral database. The SLW-1 model...

... inhomogeneities in gas-soot mixtures. In this new method, each species is considered as one scale; the absorption coefficients within each narrow band of every gas scale are divided into M exclusive spectral groups, depending on their temperature dependence. Accurate and compact narrow band multigroup databases...

... for each electronic upper state population forming the electronic system. The spectral module for the PMC method was optimized toward computational efficiency for emission calculations, wavelength selections of photon bundles and absorption coefficient calculations in the ray tracing scheme. 19 12...

... of TiO 2 particles in polyethylene resin as an absorbing matrix in the wavelength range of 1.7 – 15 μ m based on the MS, FFA, and NFA. We then calculated the effective scattering and absorption coefficients for different models. To investigate the effect of the particle size and volume concentration...

... possible the use of this approach not only for the core melt in nuclear fuel-coolant interactions but also for other melt substances, which are widely used in the laboratory experiments. The numerical data demonstrate an effect of absorption coefficient of the particle substance on the rate of particle...

...S. S. Sazhin; T. Kristyadi; W. A. Abdelghaffar; S. Begg; M. R. Heikal; S. V. Mikhalovsky; S. T. Meikle; O. Al-Hanbali The values of absorption coefficients of gasoline fuel (BP Pump Grade 95 RON ULG (research octane number unleaded gasoline)), 2,2,4-trimethylpentane ( CH 3 ) 2 CHCH 2 C ( CH 3 ) 3...

... line-by-line integration of the spectral absorption coefficients and is, therefore, impractical. The second approach employs a narrow-band k -distribution database to calculate all parameters as in the original narrow-banded based MSFSK formulation and is, therefore, efficient. This distribution scheme...

... method. A second-order differencing scheme is used for discretization. The numerical results are validated by comparing with results available in the literature. The effects of changes in the refractive index and absorption coefficient due to doping on fiber drawing are investigated. This problem has...

... thermal diffusivity photoreflectance thermoreflectance absorption coefficients heat transfer temperature distribution picosecond photoreflectance thermal diffusivity optical absorption impulse response asymptotic behaviors The thermal characterization of thin deposits or thin films...

... properties for these are obtained from the literatures and a three-band model is developed to represent the values. It is found that radiative heat flux on the surface of the preform is strongly affected by the differences in the absorption coefficient due to doping. However, changes of about 1...

... capacity, electron relaxation time, electron conductivity, reflectivity, and absorption coefficient. The proposed model predicts the damage thresholds more accurately than the existing model for gold films when compared with published experimental results. 21 09 2004 07 06 2005 metallic...

..., and the critical temperature above which Doppler broadening has a significant effect on the absorption coefficient is established for gaseous H 2 O and CO 2 . Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER . Manuscript received by the Heat Transfer Division February...

...S. P. Fuss, ASME Mem.; A. Hamins The Planck mean absorption coefficient, a p , has been calculated for HBr, HCl, and HF over a temperature range from 300 K–2300 K using data from the 1996 edition of the HITRAN molecular database. Plots of a p versus temperature showed monotonically decreasing...

...-reciprocal nephelometer in conjunction with gravimetric sampling. The specific absorption coefficient of particulate ash from fires burning D 4 and MM is significantly lower than that of particulate soot from an acetylene (hydrocarbon) flame. Scattering is the dominant part of extinction in fires burning...