# Validation and test cases

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 Revision as of 18:55, 29 May 2007 (view source) (→External links)← Older edit Revision as of 09:14, 3 January 2012 (view source)Peter (Talk | contribs) m (Reverted edits by Reverse22 (talk) to last revision by Peter)Newer edit → (9 intermediate revisions not shown) Line 20: Line 20: *[[2-D vortex in isentropic flow]] *[[2-D vortex in isentropic flow]] *[[2-D Riemann problem]] *[[2-D Riemann problem]] - *[[2-D Laminar/Turbulent driven square cavity flow]] + *[[2-D laminar/turbulent driven square cavity flow]] *[[Circular advection]] *[[Circular advection]] *[[Explosion test in 2-D]] *[[Explosion test in 2-D]] *[[Lid-driven cavity problem]] *[[Lid-driven cavity problem]] *[[Jeffery-Hamel flow]] *[[Jeffery-Hamel flow]] - *[[Laminar Flow over backward facing step]] + *[[Laminar flow over backward facing step]] - *[[Turbulent Flow over backward facing step]] + *[[Turbulent flow over backward facing step]] *[[Flow around a circular cylinder]] *[[Flow around a circular cylinder]] *[[Flow across a square cylinder]] *[[Flow across a square cylinder]] Line 40: Line 40: *[[2-D Single Mode Rayleigh-Taylor Instability]] *[[2-D Single Mode Rayleigh-Taylor Instability]] *[[2-D Single Mode Richtmyer-Meshkov Instability]] *[[2-D Single Mode Richtmyer-Meshkov Instability]] + *[[2-D Mach 3 Wind Tunnel With a Step]] == 3-D test cases == == 3-D test cases == Line 54: Line 55: *[[3-D Single Mode Rayleigh-Taylor Instability]] *[[3-D Single Mode Rayleigh-Taylor Instability]] *[[3-D Single Mode Richtmyer-Meshkov Instability]] *[[3-D Single Mode Richtmyer-Meshkov Instability]] + *[[Free-Surface Piercing NACA 0024 Hydrofoil]] == Transition test cases == == Transition test cases ==

## Revision as of 09:14, 3 January 2012

Suitable cases for the validation and benchmarking of CFD codes. Articles should include a description of the case, data to compare with, and possibly contributed solutions. We could definitely use more three dimensional cases (only one has an article currently).

## Introduction

A common issue that arises in CFD is the validation and testing of the code to be used for a computation. The code can be a newly written one (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 for the task at hand). Some of the cases described in the article below are easy to solve, while others are more difficult.

When choosing a case for validation purposes, keep the following in mind:

• Don't try to do too much. If you have written a code, try the 2-D cases first. If you are testing a commercial code, it is probably best to try (vendor supplied) tutorial cases, and then move on to a test case that is like what the code will be expected to do.
• Some of these cases are still active areas of research, particularly for LES and the like.
• Don't rely just on the information here. The authoritative source is always the literature, so look at the references cited in the articles for definitive details.