نتایج جستجو برای: gaseous diffusion
تعداد نتایج: 175966 فیلتر نتایج به سال:
Oscillation frequency measurement of gaseous diffusion flames using electrostatic sensing techniques
The oscillation frequency of a burner flame is closely related to the combustion conditions and stability. Oscillation measurement essential for optimized operation process. In this paper, novel use electrostatic sensors in conjunction with power spectral analysis presented gaseous laminar diffusion flame. Experimental tests carried out on rig demonstrate that developed system realises relative...
Exposure to volatile organic compounds from outdoor air pollution is a major public health concern; however, there is scant information about the health effects induced by inhalation exposure to photochemical transformed products of primary emissions. In this study, we present a stable and reproducible exposure method to deliver ppm-ppb levels of gaseous standards in a humidified air stream for...
Abstract In this work, we present a model, based on rough hard-sphere theory, for the tracer diffusion coefficients of gaseous solutes in non-polar liquids. This work extends an earlier model developed specifically carbon dioxide hydrocarbon liquids and establishes general correlation The considered were light hydrocarbons, dioxide, nitrogen argon, while solvents all Application requires knowle...
Drift velocity and longitudinal diffusion measurements are reported for a Negative Ion TPC (NITPC) operating with Helium + CS 2 gas mixtures at total pressures from 160 to 700 torr. Longitudinal diffusion at the thermal-limit was observed for drift fields up to at least 700 V/cm in all gas mixtures tested. The results are of particular interest in connection with mechanical simplification of Da...
The high external surface area leads to a significant increase in the surface contact between the gaseous or liquid reactants and the active phase supported on this nanostructured host which is a prerequisite for its use as catalyst support, especially in liquid phase medium where diffusion rate is predominant [2]. Also, the strong interactions between the exposed prismatic planes and the depos...
Abstract. A mathematical model is proposed where the classical Maxwell-Stefan diffusion model for gas mixtures is coupled to an advection-type equation for the temperature of the physical system. This coupled system is derived from first principles in the sense that the starting point of our analysis is a system of Boltzmann equations for gaseous mixtures. We perform an asymptotic analysis on t...
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