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• Near-wall treatment for k-omega models
  As described in [[Two equation turbulence models]] low and high reynolds number treatments are possible. ==Standard wall functions==
  4 KB (581 words) - 10:40, 31 March 2021
• Near-wall treatment for k-epsilon models
  [[Low-Re k-epsilon models]]
  61 B (6 words) - 17:04, 18 December 2008
• Near-wall treatment for LES models
  The most basic form of wall modeling for LES simply imposes some additional constraints upon the eddy v ... At the very least, it is probably a violation of the "spirit" of LES, so models that do not require ad hoc damping have been sought.
  3 KB (497 words) - 12:30, 8 June 2006

Page text matches

• Near-wall treatment for k-omega models
  As described in [[Two equation turbulence models]] low and high reynolds number treatments are possible. ==Standard wall functions==
  4 KB (581 words) - 10:40, 31 March 2021
• Fluent FAQ
  '''BOUNDARY CONDITIONS''' -----�In my case I had set a wall boundary condition instead of an axis boundary condition and then FLuent re ==== How do I model heat conduction in a composite wall? ====
  39 KB (6,386 words) - 16:48, 26 April 2013
• Best practice guidelines for turbomachinery CFD
  ...celeration/deceleration caused by a changing channel height or growing end-wall boundary layers. Codes focused on turbomachinery applications often have th ...sary in order to obtain reasonable results. For applications where the end-wall boundary layers grow very quickly and interact with a large part of the flo
  41 KB (6,252 words) - 08:46, 4 March 2023
• Baldwin-Lomax model
  ...est suited to a structured grid in which grid lines emanate outward from a wall (or wakeline, etc.). The model is thus best used in a structured grid sett [[Category:Turbulence models]]
  8 KB (1,262 words) - 09:15, 3 January 2012
• Turbulence modeling
  ==Classes of turbulence models== *RANS-based models
  3 KB (282 words) - 19:16, 10 April 2021
• Two equation turbulence models
  ...so very much still an active area of research and new refined two-equation models are still being developed. By definition, two equation models include two extra transport equations to represent the turbulent properties
  11 KB (1,667 words) - 20:52, 25 October 2016
• Ansys FAQ
  ...ally requires a higher mesh quality than single phase, and some multiphase models are very strict - for instance accurate surface tension modeling can requir <LI><B>Is double precision required?</B> Some models require additional numerical accuracy to solve. Examples include multiphase
  27 KB (4,461 words) - 02:03, 18 August 2018
• Turbulent flat-plate
  ..., Wolfgang and Scheuerer, Georg|year=1985|title=Turbulence Models for Near-Wall and Low-Reynolds Number Flows: A Review|rest=AIAA Journal, Vol. 23, No. 9,
  863 B (113 words) - 14:20, 22 May 2007
• Large eddy simulation (LES)
  ...on and implicitly account for the small eddies by using a [[#Subgrid-scale models|subgrid-scale model]] (SGS model). Subgrid-scale turbulence models usually employ the [[Boussinesq eddy viscosity assumption|Boussinesq hypoth
  6 KB (882 words) - 21:50, 24 June 2013
• Transport equation based wall distance calculation
  ===Wall-distance variable === Wall distance are required for the implementation of various turbulence models.
  2 KB (267 words) - 12:31, 2 August 2006
• Detached eddy simulation (DES)
  ...nces|[Spalart et al (1997)]]] approach. This model attempts to treat near-wall regions in a RANS-like manner, and treat the rest of the flow in an LES-lik [[Category:Turbulence models]]
  3 KB (456 words) - 09:56, 17 December 2008
• Baldwin-Barth model
  ...0|title=A One-Equation Turbulence Transport Model for High Reynolds Number Wall-Bounded Flows|rest=NASA TM 102847}} [[Category:Turbulence models]]
  2 KB (319 words) - 09:34, 12 June 2007
• SST k-omega model
  ...the boundary layer makes the model directly usable all the way down to the wall through the viscous sub-layer, hence the SST k-ω model can be used as a [[ ...er|author=Menter, F. R.|year=1993|title=Zonal Two Equation k-ω Turbulence Models for Aerodynamic Flows|rest=AIAA Paper 93-2906}}
  3 KB (489 words) - 21:36, 28 February 2011
• V2-f models
  ...ow [[Reynolds number|Reynolds-numbers]], that does not need to make use of wall functions because it is valid upto solid walls. ...n of the damping of turbulent transport close to the wall. The anisotropic wall effects are modelled through the elliptic relaxation function <math>f</math
  6 KB (917 words) - 05:45, 7 February 2014
• CHAM FAQ
  ...llection of special algorithms for computing interfacial areas, evaluating wall shear stresses, and for computing advection and diffusion near solid bounda ...llection of special algorithms for computing interfacial areas, evaluating wall shear stresses, and for computing advection and diffusion near solid bounda
  37 KB (5,717 words) - 12:46, 9 December 2019
• Near-wall treatment for LES models
  The most basic form of wall modeling for LES simply imposes some additional constraints upon the eddy v ... At the very least, it is probably a violation of the "spirit" of LES, so models that do not require ad hoc damping have been sought.
  3 KB (497 words) - 12:30, 8 June 2006
• Focus area May 2006: Turbulence modeling
  #Many turbulence models lack descriptions or the descriptions are not complete. For an example of a #Write about [[Wall functions]] and the [[Law of the wall]]
  2 KB (268 words) - 15:34, 11 May 2006
• Low-Re k-epsilon models
  ...d classical models. Feel free to add more models here, but please only add models that have gained a widespread use in the CFD community. ==Overview of models==
  6 KB (842 words) - 09:58, 17 December 2008
• Yap correction
  <math>y_n</math> is the normal distance to the nearest wall. ...ritten in the same way as is in the CFD-Wiki article on [[low-Re k-epsilon models]].
  3 KB (513 words) - 18:55, 9 November 2010
• Flow around a circular cylinder
  ...pecially difficult, though care must be taken to properly resolve the near-wall region as the Reynolds number is increased. [2] Chakraborty, J., Verma, N. and Chhabra, R. P., 2004, Wall effects in the flow past a circular cylinder in a plane channel: a numerica
  6 KB (884 words) - 11:31, 8 April 2017
• K-epsilon models
  ... of large adverse pressure gradients (Reference 4). It is a [[Two equation models|two equation model]], that means, it includes two extra transport equations There are two major formulations of K-epsilon models (see [[#References|References]] 2 and 3). That of Launder and Sharma is ty
  3 KB (406 words) - 16:03, 18 June 2011
• K-omega models
  ...nly used [[Turbulence modeling|turbulence models]]. It is a [[Two equation models|two equation model]], that means, it includes two extra transport equations == Common used K-omega models ==
  1 KB (148 words) - 12:43, 12 October 2011
• Zeta-f model
  *<b>Popovac, M., Hanjalic, K.</b> Compound Wall Treatment for RANS Computation of Complex Turbulent Flows and Heat Transfer *<b>Hanjalic, K., Popovac, M., Hadziabdic, M.</b> A robust near-wall elliptic-relaxation eddy-viscosity turbulence model for CFD, Int. J. Heat F
  3 KB (440 words) - 10:06, 17 December 2008
• CFD++
  ...reduces the cost of traditional large eddy simulation by modeling the near-wall layer and automatically exploiting the advantages of LES in embedded fine-g
  3 KB (380 words) - 01:38, 17 January 2007
• 2-D laminar/turbulent driven square cavity flow
  ...ion schemes]] for terms in initial equations as well as of [[computational models]] and methods. A large number of calculation data concerning this problem h ...an order of magnitude and more) and to increase the resolution in the near-wall region for this problem.
  5 KB (692 words) - 18:37, 13 August 2007
• PHOENICS
  ...llection of special algorithms for computing interfacial areas, evaluating wall shear stresses, and for computing advection and diffusion near solid bounda ... some unique, fast algorithms for calculating radiative transfer and inter-wall distances. A newer module allows moving coordinates and moving objects. I
  11 KB (1,641 words) - 11:18, 5 July 2013
• A roughness-dependent model
  For a smooth wall (<math>y_0 = 0</math>): [[Category:Turbulence models]]
  4 KB (620 words) - 12:47, 22 June 2007
• Introduction to turbulence/Free turbulent shear flows
  ...as laminar flows, they tend to become turbulent much more rapidly than the wall-bounded flows which we will discuss later. This is because the three-dimens ...ces motions in the surrounding stream just as would the motions of a solid wall. Alternately, the flow outside the interface can be viewed as being “indu
  67 KB (11,204 words) - 13:42, 19 April 2016
• Introduction to turbulence/Wall bounded turbulent flows
  ... entirely under the influence of it. These are generally referred to as “wall-bounded flows” or “boundary layer flows”. The most obvious causes for the effects of the wall on the flow arise from the
  41 KB (7,002 words) - 13:02, 21 March 2012
• Rahman-Siikonen-Agarwal Model
  ... used to represent the kinematic blocking by the wall. To avoid defining a wall distance, a Helmholtz-type elliptic relaxation equation is used for <math>f L^2 = \zeta(2\zeta+C_\mu Re_T)\sqrt{\frac{\nu^3}{\epsilon}}, \quad (f_\mu)_{wall} = 0
  4 KB (637 words) - 19:47, 8 July 2013
• CONVERGE FAQ
  ... to ensure I have an acceptable mesh near the wall for the law-of-the-wall models?=== ...n option for y+ AMR restriction, which can restrict AMR cells close to the wall. You specify the target y+ and y+ ratio for this feature:
  85 KB (13,492 words) - 15:51, 10 August 2020
• Wray-Agarwal(WA) Turbulence Model
  ...features of two-equation <math>k-\epsilon</math> and <math>k-\omega</math> models. '''and d is the minimum distance to the nearest wall.'''
  3 KB (458 words) - 17:19, 19 February 2021
• Wray-Agarwal(WA) turbulence Model
  ...features of two-equation <math>k-\epsilon</math> and <math>k-\omega</math> models. '''and d is the minimum distance to the nearest wall.'''
  3 KB (458 words) - 16:36, 19 February 2021
• Shuai-Agarwal Turbulence Model
  ...mproved model has been validated by simulating several benchmark canonical wall-bounded turbulent flows with small regions of separation from NASA TMR (htt [[Category:Turbulence models]]
  4 KB (611 words) - 02:52, 8 April 2021
• Shuai-Agarwal turbulence Model
  ...mproved model has been validated by simulating several benchmark canonical wall-bounded turbulent flows with small regions of separation from NASA TMR (htt [[Category:Turbulence models]]
  4 KB (617 words) - 19:43, 10 April 2021