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• 2-D vortex in isentropic flow
  [[entropy]] gradient in the [[flow-field]]. The perturbations in the velocity are given by:
  2 KB (242 words) - 04:00, 21 October 2014
• Overset grids
  ...l not be in the proper range. This can be used to construct a Newton-like gradient search technique. For more details, the reader is referred to the chapter
  7 KB (1,042 words) - 14:13, 17 August 2021
• Conjugate gradient methods
  The unpreconditioned conjugate gradient method constructs the '''i'''th iterate <math>x^{(k)}</math> as an element * [http://www.math-linux.com/spip.php?article54 Conjugate Gradient Method] by N. Soualem.
  1 KB (170 words) - 17:49, 26 August 2006
• Combustion
  ...h>. Moreover, the work of pressure is considered as negligible because the gradient of pressure is negligible (low-Mach number approximation is indeed also nam ...cause the diffusion of the species is directly dependent on the unbalance (gradient) of their distribution. A sharp transition from fuel to oxidizer creates in
  156 KB (25,897 words) - 22:14, 17 March 2011
• Approximation Schemes for convective term - structured grids - Summary of Discretizations Schemes and examples
  ...false diffusion on flow that is not parallel to the grid, whilst the sharp gradient should generate oscillations in the solutions generated using the second an
  9 KB (1,327 words) - 05:56, 21 April 2012
• Approximation Schemes for convective term - structured grids - Common
  ...mbol{\varphi \left( r \right)}</math> is termed a limiter function and the gradient ratio <math>\boldsymbol{r}</math> is defined as:
  28 KB (4,096 words) - 13:11, 24 October 2016
• Rayleigh number
  <math>\Gamma =</math> background [[temperature]] [[gradient]],
  508 B (70 words) - 03:40, 21 September 2005
• Richardson number
  ...he buoyancy frequency to the background velocity gradient is known as the (gradient) Richardson number.
  754 B (108 words) - 15:37, 16 January 2008
• Gradient computation
  ...equal to the volume integral (over the volume bound by the surface) of the gradient of the scalar function. <br> ...correctly approximated in order to yield a correct computation of the cell gradient. As the FVM uses a cell centered formulation, values at the faces are not r
  5 KB (851 words) - 13:04, 7 June 2011
• SIMPLE algorithm
  ... velocity field is obtained by solving the momentum equation. The pressure gradient term is calculated using the pressure distribution from the previous iterat ...p^' }}{{\vec a_P^v }} </math> ; where <math> {\nabla p^' } </math> is the gradient of the pressure corrections, <math> {\vec a_P^v } </math> is the vector of
  3 KB (442 words) - 10:42, 11 March 2016
• Sand box Approximation Schemes
  ... same mathematical form, and both have the effect of limiting the solution gradient near shocks or discontinuities. In general, the term flux limiter is used w ...when the limiter is equal to zero (sharp gradient, opposite slopes or zero gradient), the flux is represented by a ''low resolution scheme''. Similarly, when t
  26 KB (3,687 words) - 20:19, 7 November 2011
• Mesh adaptation
  ... the issue is very severe for shocks, the smaller the cell, the higher the gradient and the indicator would keep on picking the region, unless a threshold valu ...via the error indicators is often undertaken by using either the 'solution gradient' or 'soultion curvature'. Hence the refinement variable coupled with the re
  8 KB (1,236 words) - 09:43, 17 May 2012
• Johnson-King model
  ...solve only for turbulent boundary layer flows with strong adverse pressure gradient.
  735 B (103 words) - 05:48, 17 January 2012
• Best practice guidelines for heat transfer simulations
  ...id (say both are at the different temperature), there exists a temperature gradient between these two media and results in the energy transfer. If this fluid m
  2 KB (329 words) - 02:21, 7 April 2011
• Subgrid variance
  ...{sgs}''^2} </math> is a subgrid variance flux and is often modeled using a gradient approach with turbulent diffusivity.
  1 KB (242 words) - 11:19, 11 January 2006
• CHAM FAQ
  ...Stone's strongly implicit solver, but the option exists to use a Conjugate Gradient Residuals solver for each equation. ...t of solid obstructions enters the momentum equations through the pressure gradient, which is a built-in source rather than an externally imposed one - it does
  37 KB (5,717 words) - 12:46, 9 December 2019
• Heat transfer
  ...ed '''''heat'''''. The overall driving force for this heat flow is thermal gradient. Conduction heat transfer through a substance is because of a temperature ''gradient''. The ''rate'' of heat transfer by conduction between two regions of a sub
  6 KB (990 words) - 03:23, 17 February 2009
• Source term linearization
  ...ath>\left ( \frac {\partial S}{\partial \phi} \right ) ^* </math> is the gradient of S evaluated at <math>\phi_P^*</math>. <br>
  3 KB (441 words) - 10:25, 22 February 2007
• Scalar dissipation
  Under RANS assumptions gradient of the scalar fluctuations are much larger than gradients of the means,
  2 KB (246 words) - 16:41, 12 April 2007
• Skin friction coefficient
  ...references) the formula describing Cf over a flat plate , without pressure gradient, is Cf=0.0725*Re^(-1/5) and it is valid between 5x10^5<Re<10^7 with the as
  4 KB (516 words) - 12:14, 14 January 2016