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vanalbada limiter

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Old   May 15, 2014, 09:12
Default vanalbada limiter
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Hi Foamers.

Does anybody know why the vanAlbada limiter (src/finiteVolume / interpolation / surfaceInterpolation / limitedSchemes / vanAlbada/vanAlbada.H)

isimplemented as :

r*(r + 1)/(sqr(r) + 1)

Where the van albada limiter is actually,
r*(r + 1)/(r**2 + 1) (see for example wikipedia or Berger and Aftosmis,
nalysis of Slope Limiters on Irregular Grids).

Another troubling aspect is that the OF implementation does not
fulfill Sweby conditions for limiters.

The limiter is greater than 2 when r is greater then ~ 1.7.
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Old   May 15, 2014, 09:19
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Alexey Matveichev
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Hi,

sqr(r) == r**2

(square root is sqrt in C)

Last edited by alexeym; May 15, 2014 at 09:43. Reason: typo
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Old   May 15, 2014, 09:21
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oh my mistake I thought it is square root...
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