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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 2 of 2 (0.076 seconds)Spelling suggestions: "subject:"diffusivität"" "subject:"diffusivitet""
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Computational approach to the experimental determination of diffusion coefficients for oxygen and nitrogen in hydraulic fluids using the pressure-decay methodRambaks, Andris, Kratschun, Filipp, Flake, Carsten, Messirek, Maren, Schmitz, Katharina, Murrenhoff, Hubertus 25 June 2020 (has links)
In the presented paper, the applicability of pressure-decay methods to determine the diffusivities of gases in hydraulic fluids is analysed. First, the method is described in detail and compared to other measurement methods. Secondly, the thermodynamics and the mass transfer process of the system are studied. This results in four different thermodynamic models of the gaseous phase in combination with two diffusion models. Thirdly, the influence of the models on the pressure-decay method is evaluated computationally by examining the diffusion process of air in water as all system parameters are available from literature. It is shown that ordinary pressure-decay methods are not applicable to gas mixtures like air and therefore a new method for calculating the diffusivities is suggested.
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Electrical conductivity and hydrogen diffusion in synthetic orthopyroxene single-crystals / Elektrische Leitfähigkeit und Wasserstoffdiffusion in synthetischen Orthopyroxen EinkristallenSchlechter, Elke 17 February 2011 (has links)
No description available.
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