uu.seUppsala universitets publikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Modelling Techniques for Large-Eddy Simulation of Wall-Bounded Turbulent Flows
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Institutionen för informationsteknologi, Avdelningen för beräkningsvetenskap. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Institutionen för informationsteknologi, Numerisk analys.ORCID-id: 0000-0002-2195-8408
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Large-eddy simulation (LES) is a highly accurate turbulence modelling approach in which a wide range of spatial and temporal scales of the flow are resolved. However, LES becomes prohibitively computationally expensive when applied to wall-bounded flows at high Reynolds numbers, which are typical of many industrial applications. This is caused by the need to resolve very small, yet dynamically important flow structures found in the inner region of turbulent boundary layers (TBLs). To remove the restrictive resolution requirements, coupling LES with special models for the flow in the inner region has been proposed. The predictive accuracy of this promising approach, referred to as wall-modelled LES (WMLES), requires further analysis and validation. 

In this work, systematic simulation campaigns of canonical wall-bounded flows have been conducted to support the development of a complete methodology for highly accurate WMLES on unstructured grids. Two novel algebraic wall-stress models are also proposed and shown to be more robust and precise than the classical approaches of the same type. 

For turbulence simulations, it is often challenging to provide accurate conditions at the inflow boundaries of the domain. Here, a novel methodology is proposed for generating an inflow TBL using a precursor simulation of turbulent channel flow. A procedure for determining the parameters of the precursor based on the Reynolds number of the inflow TBL is given. The proposed method is robust and easy to implement, and its accuracy is demonstrated to be on par with other state-of-the-art approaches. 

To make the above investigations possible, several software packages have been developed in the course of the work on this thesis. This includes a Python package for post-processing the flow simulation results, a Python package for inflow generation methods, and a library for WMLES based on the general-purpose software for computational fluid dynamics OpenFOAM. All three codes are publicly released under an open-source licence to facilitate their use by other research groups.

sted, utgiver, år, opplag, sider
Uppsala: Acta Universitatis Upsaliensis, 2018. , s. 91
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1697
Emneord [en]
Wall modelling, Inflow generation, Large-eddy simulation, OpenFOAM, Computational fluid dynamics
HSV kategori
Forskningsprogram
Beräkningsvetenskap
Identifikatorer
URN: urn:nbn:se:uu:diva-356729ISBN: 978-91-513-0394-9 (tryckt)OAI: oai:DiVA.org:uu-356729DiVA, id: diva2:1236761
Disputas
2018-09-21, ITC 2446, Lägerhyddsvägen 2, Uppsala, 10:15 (engelsk)
Opponent
Veileder
Forskningsfinansiär
Swedish Research Council, 621-2012-3721Tilgjengelig fra: 2018-08-31 Laget: 2018-08-05 Sist oppdatert: 2018-09-10
Delarbeid
1. The generation of turbulent inflow boundary conditions using precursor channel flow simulations
Åpne denne publikasjonen i ny fane eller vindu >>The generation of turbulent inflow boundary conditions using precursor channel flow simulations
2017 (engelsk)Inngår i: Computers & Fluids, ISSN 0045-7930, E-ISSN 1879-0747, Vol. 156, s. 21-33Artikkel i tidsskrift (Fagfellevurdert) Published
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-302801 (URN)10.1016/j.compfluid.2017.06.020 (DOI)000411848100003 ()
Prosjekter
eSSENCE
Tilgjengelig fra: 2017-06-23 Laget: 2016-09-09 Sist oppdatert: 2018-08-05bibliografisk kontrollert
2. Eddylicious: A Python package for turbulent inflow generation
Åpne denne publikasjonen i ny fane eller vindu >>Eddylicious: A Python package for turbulent inflow generation
2018 (engelsk)Inngår i: SoftwareX, E-ISSN 2352-7110, Vol. 7, s. 112-114Artikkel i tidsskrift (Fagfellevurdert) Published
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-302803 (URN)10.1016/j.softx.2018.04.001 (DOI)000457139300021 ()
Tilgjengelig fra: 2018-04-17 Laget: 2016-09-09 Sist oppdatert: 2019-03-14bibliografisk kontrollert
3. Effect of wall-stress model and mesh-cell topology on the predictive accuracy of LES for wall-bounded flows
Åpne denne publikasjonen i ny fane eller vindu >>Effect of wall-stress model and mesh-cell topology on the predictive accuracy of LES for wall-bounded flows
2018 (engelsk)Inngår i: Proc. 7th European Conference on Computational Fluid Dynamics, European Community on Computional Methods in Applied Sciences (ECCOMAS), 2018Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
European Community on Computional Methods in Applied Sciences (ECCOMAS), 2018
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-356047 (URN)
Konferanse
ECFD 2018, June 11–15, Glasgow, UK
Tilgjengelig fra: 2018-06-12 Laget: 2018-07-12 Sist oppdatert: 2018-08-05bibliografisk kontrollert
4. A-priori study of wall modeling in large eddy simulation
Åpne denne publikasjonen i ny fane eller vindu >>A-priori study of wall modeling in large eddy simulation
2018 (engelsk)Inngår i: Proc. 7th European Conference on Computational Fluid Dynamics, European Community on Computional Methods in Applied Sciences (ECCOMAS), 2018Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
European Community on Computional Methods in Applied Sciences (ECCOMAS), 2018
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-356045 (URN)
Konferanse
ECFD 2018, June 11–15, Glasgow, UK
Tilgjengelig fra: 2018-06-12 Laget: 2018-07-12 Sist oppdatert: 2018-10-07bibliografisk kontrollert
5. Turbulucid: A Python package for post-processing of fluid flow simulations
Åpne denne publikasjonen i ny fane eller vindu >>Turbulucid: A Python package for post-processing of fluid flow simulations
2018 (engelsk)Inngår i: Journal of Open Research Software, E-ISSN 2049-9647, Vol. 6, artikkel-id 23Artikkel i tidsskrift (Fagfellevurdert) Published
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-356438 (URN)10.5334/jors.213 (DOI)
Tilgjengelig fra: 2018-11-02 Laget: 2018-07-27 Sist oppdatert: 2018-11-10bibliografisk kontrollert
6. A library for wall-modelled large-eddy simulation based on OpenFOAM technology
Åpne denne publikasjonen i ny fane eller vindu >>A library for wall-modelled large-eddy simulation based on OpenFOAM technology
2019 (engelsk)Inngår i: Computer Physics Communications, ISSN 0010-4655, E-ISSN 1879-2944, Vol. 239, s. 204-224Artikkel i tidsskrift (Fagfellevurdert) Published
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-356462 (URN)10.1016/j.cpc.2019.01.016 (DOI)000466248000019 ()
Tilgjengelig fra: 2019-02-02 Laget: 2018-07-27 Sist oppdatert: 2019-06-19bibliografisk kontrollert

Open Access i DiVA

fulltext(1646 kB)189 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1646 kBChecksum SHA-512
45d7a55d165669cd88be64319985570bfdab876608c78f2b28c16c7ca77f7c623dbfc2a452553aa2ac16fe41eefc7c6cd4d9e5df1ba949db177818ddab98d9eb
Type fulltextMimetype application/pdf
Kjøp publikasjonen >>

Personposter BETA

Mukha, Timofey

Søk i DiVA

Av forfatter/redaktør
Mukha, Timofey
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 189 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 1040 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf