@东岳
在rhoPimpleFoam/LES/pitzDaily 算例里找到了这个应用，
---Properties
Second order
Unbounded
Attempts to limit the unboundedness of the linear scheme
---Usage
The scheme is specified using:
divSchemes
{
default none;
div(phi,U) Gauss filteredLinear2 <k> <l>;
}
---Where the coefficients
--k: Scales the rate at which the correction is applied
0 : linear
1 : fully limited
--l: Maximum allowed overshoot/undershoot relative to the difference across the face.
0 : no overshoot/undershoot
1 : overshoot/undershoot equal to the difference across the face
对于矢量时候 用filteredLinear2V， 求解出来流场的unboundedness 介于 Gauss Linear (unbounded) 和 Gauss GammaV (bounded)中间
