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• Incompressible flow
  ...roperty of the flow and not of the fluid. The rate of change of density of a material fluid element is given by the material derivative ...orm in an incompressible flow. All that is required is that the density of a fluid element should not change in time as it moves through space. For exam
  8 KB (1,427 words) - 18:57, 19 August 2013
• Potential flow
  A flow in which vorticity is zero is called potential flow, or irrotational f it implies that the velocity is the gradient of a scalar field called the velocity potential, and usually denoted as <math>\p
  800 B (127 words) - 13:06, 16 March 2016
• Inviscid flow
  A flow in which viscous effects can be neglected is known as ''inviscid flow' Have a look at this discussion:<br>
  2 KB (323 words) - 07:46, 20 August 2013
• Siemens FAQ
  This section is empty. This is just a suggestion on how to structure it. Please feel free to add questions and an ... Everytime copy pasting the code or renaming the files as POSDAT.F may be a little boring / inefficient. In stead the following procedure can be adopt
  8 KB (1,278 words) - 21:48, 9 December 2017
• Validation and test cases
  ...for the validation and benchmarking of CFD codes. Articles should include a description of the case, data to compare with, and possibly contributed sol ...the testing then is to determine if the code works properly), or it can be a commercial code (the testing then is to determine if the code is suitable f
  4 KB (629 words) - 21:50, 3 August 2017
• Introduction to CFD
  ...nding the governing laws and the nature of fluids themselves, resulting in a complex yet theoretically strong field of research.</p> ...ved on in geometrical domain divided into small volumes, commonly known as a [[Meshing | mesh (or grid)]]. </p>
  2 KB (401 words) - 06:50, 8 January 2013
• Lid-driven cavity problem
  ...ndary conditions are also simple. The standard case is fluid contained in a square domain with Dirichlet boundary conditions on all sides, with three s ...n also be done with the lid replaced with a moving fluid. This problem is a somewhat different situation, and is usually referred to as the shear-drive
  3 KB (546 words) - 12:44, 9 April 2013
• Large eddy simulation (LES)
  ...dies in a calculation and implicitly account for the small eddies by using a [[#Subgrid-scale models|subgrid-scale model]] (SGS model). ...Formally, one may think of filtering as the convolution of a function with a [[LES filters|filtering kernel]] <math>G</math>:
  6 KB (882 words) - 21:50, 24 June 2013
• Spalart-Allmaras model
  ...lmaras model is a one equation model which solves a transport equation for a viscosity-like variable <math>\tilde{\nu}</math>. This may be referred to a [Dacles-Mariani et. al. 1995] proposed a modification of the model which also accounts for the effect of mean strain
  4 KB (662 words) - 13:34, 23 April 2015
• Finite volume
  ...cal fluid dynamics, the first step in the FVM is to divide the domain into a number of control volumes (aka cells, elements) where the variable of inter ...ole computational domain and '''for any number of control volumes'''. Even a coarse grid solution exhibits exact integral balances.<br>
  4 KB (643 words) - 09:15, 3 January 2012
• Biconjugate gradient stabilized method
  A = coefficient matrix <br> M = the preconditioning matrix constructed by matrix A <br>
  2 KB (281 words) - 17:01, 31 October 2016
• OpenFOAM
  ...d approach which makes it easy to extend. The package includes modules for a wide range of applications. ...ry Weller and others at Imperial College. For a few years FOAM was sold as a commercial code by the company Nabla Ltd. However, in 2004 FOAM was release
  2 KB (322 words) - 08:58, 26 February 2019
• Gauss-Seidel method
  The '''Gauss-Seidel method''' is a technique used to solve a linear system of equations. The method is named after the German mathematic We seek the solution to a set of linear equations: <br>
  8 KB (1,113 words) - 09:15, 3 January 2012
• Jacobi method
  ...ged in. The process is then iterated until it converges. This algorithm is a stripped-down version of the Jacobi transformation method of matrix diagona :<math> A \phi = b </math> <br>
  6 KB (825 words) - 09:15, 3 January 2012
• Multigrid methods
  ...he gradient of the error from node to node. If the error is distributed in a high frequency mode, the convergence rate is fast. However, after the first For many iterative methods, the number of iterations required to reach a converged solution is linearly proportional to number of nodes in one direc
  5 KB (746 words) - 09:49, 12 July 2019
• 2-D vortex in isentropic flow
  Perturbations are added to the [[free-stream]] in such a way that there is no As a result of [[isentropy]], the exact solution corresponds to a pure [[advection]]
  2 KB (242 words) - 04:00, 21 October 2014
• Overset grids
  ...ach. In a full Chimera grid system, a complex geometry is decomposed into a system of geometrically simple overlapping grids. Boundary information is ...mera-type calculation is not insignificant, and thus has been automated to a high degree. In very general terms, there are three steps to setting up an
  7 KB (1,042 words) - 14:13, 17 August 2021
• Realisable k-epsilon model
  ...erline{\Omega_{ij}} </math> is the mean rate-of-rotation tensor viewed in a rotating reference frame with the angular velocity <math> \omega_k </math>
  2 KB (380 words) - 19:57, 16 December 2014
• Application areas
  ...ection is not very well developed yet. Most application areas just contain a short introduction and some links. Please feel free to expand an applicatio
  631 B (82 words) - 16:10, 11 October 2013
• Approximation Schemes for convective term - structured grids - Summary of Discretizations Schemes and examples
  ...f anyone have literature connected with convective schemes, please drop us a line. Of course You are welkome to participate in Wiki'' ...all be very glad and grateful to hear any critical suggestion (please drop a few lines at Wiki Forum)''
  9 KB (1,327 words) - 05:56, 21 April 2012