- title
- Computational approach to the experimental determination of diffusion coefficients for oxygen and nitrogen in hydraulic fluids using the pressure-decay method
- Please use the following URL when quoting:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-710993
- conference
- 12th International Fluid Power Conference (12. IFK). Dresden, October 12 – 14, 2020
- Source
- Volume 1 – Symposium - 1
Erscheinungsort: Dresden
Verlag: Technische Universität Dresden
Erscheinungsjahr: 2020
Bandnummer Schriftenreihe: 1
Seiten: 283-293
DOI: 10.25368/2020.6 - doi
- https://doi.org/10.25368/2020.36
- Abstract (EN)
- 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.
- Keywords (DE)
- 12. IFK, Diffusivität, Druckabfallmethode, binäre und ternäre Diffusion, viriale Zustandsgleichung
- Keywords (EN)
- 12th International Fluid Power Conference, Diffusivity, Pressure-decay method, Binary and ternary diffusion, Virial equation of state
- Classification (DDC)
- 620
- Classification (RVK)
- ZQ 5460
- university_publisher
- Technische Universität Dresden, Dresden
- corporation_other
- Dresdner Verein zur Förderung der Fluidtechnik e. V. Dresden, Dresden
- version
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-710993
- Qucosa date of publication
- 25.06.2020
- Document type
- in_proceeding
- Document language
- English
- licence
