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A stochastic two-sc...
A stochastic two-scale model for pressure-driven flow between rough surfaces
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- Rafols, Francesc Perez (författare)
- Luleå tekniska universitet,Maskinelement
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- Larsson, Roland (författare)
- Luleå tekniska universitet,Maskinelement
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- Lundström, Staffan (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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- Wall, Peter (författare)
- Luleå tekniska universitet,Matematiska vetenskaper
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- Almqvist, Andreas (författare)
- Luleå tekniska universitet,Maskinelement
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visa färre...
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(creator_code:org_t)
- 2016-06
- 2016
- Engelska.
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Ingår i: Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences. - : The Royal Society. - 1364-5021 .- 1471-2946. ; 472:2190
- Relaterad länk:
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https://royalsociety...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Seal surface topography typically consists of global-scale geometric features as well as local-scale roughness details and homogenization-based approaches are, therefore, readily applied. These provide for resolving the global scale (large domain) with a relatively coarse mesh, while resolving the local scale (small domain) in high detail. As the total flow decreases, however, the flow pattern becomes tortuous and this requires a larger local-scale domain to obtain a converged solution. Therefore, a classical homogenization-based approach might not be feasible for simulation of very small flows. In order to study small flows, a model allowing feasibly-sized local domains, for really small flow rates, is developed. Realization was made possible by coupling the two scales with a stochastic element. Results from numerical experiments, show that the present model is in better agreement with the direct deterministic one than the conventional homogenization type of model, both quantitatively in terms of flow rate and qualitatively in reflecting the flow pattern.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- NATURVETENSKAP -- Matematik -- Matematisk analys (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Mathematical Analysis (hsv//eng)
Nyckelord
- Maskinelement
- Machine Elements
- Strömningslära
- Fluid Mechanics
- Mathematics
- Matematik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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