Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Nonlinear features in explicit algebraic models for turbulent flows with active scalars
KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0002-9819-2906
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Turbulens. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.ORCID-id: 0000-0001-8692-0956
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0002-2711-4687
2015 (Engelska)Ingår i: 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015, TSFP-9 , 2015Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A detailed discussion of explicit algebraic turbulence models in the case of active scalars is given. In particular, we discuss the appearance of nonlinearities in the models and the need for explicit solutions of the resulting nonlinear equations. Focussing on a recently published model for two-dimensional stratified flows, we present an intuitive way of approximating the solution of a sixth-order polynomial equation for the production-to-dissipation ratio (p + g)/e of turbulent kinetic energy K. This formulation is shown to be consistent for turbulent channel flow with stable and unstable stratification. The result is important for obtaining a robust model with a correct behaviour of the turbulence production in different limits of shear and buoyancy. The results have recently been published in Lazeroms et al. (2015).

Ort, förlag, år, upplaga, sidor
TSFP-9 , 2015.
Nyckelord [en]
Algebra, Channel flow, Control nonlinearities, Kinetic energy, Kinetics, Nonlinear equations, Polynomials, Thermal stratification, Turbulence models, Dissipation ratio, Explicit algebraic models, Explicit solutions, Nonlinear features, Order polynomials, Turbulence productions, Turbulent channel flows, Turbulent kinetic energy, Shear flow
Nationell ämneskategori
Strömningsmekanik och akustik
Identifikatorer
URN: urn:nbn:se:kth:diva-222966Scopus ID: 2-s2.0-85034427107ISBN: 9780000000002 (tryckt)OAI: oai:DiVA.org:kth-222966DiVA, id: diva2:1193303
Konferens
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015, 30 June 2015 through 3 July 2015
Anmärkning

QC 20180326

Tillgänglig från: 2018-03-26 Skapad: 2018-03-26 Senast uppdaterad: 2018-03-26Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Scopus

Personposter BETA

Brethouwer, GertWallin, StefanJohansson, Arne V.

Sök vidare i DiVA

Av författaren/redaktören
Lazeroms, WernerBrethouwer, GertWallin, StefanJohansson, Arne V.
Av organisationen
Linné Flow Center, FLOWMekanikSeRC - Swedish e-Science Research CentreTurbulens
Strömningsmekanik och akustik

Sök vidare utanför DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetricpoäng

isbn
urn-nbn
Totalt: 252 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf