[liuhuafei]

Maybe the MUSCL scheme is same as the MC scheme? Please check them
in the MUSCL.H and MC.H

MUSCL.H

75 scalar r = LimiterFunc::r
76 (
77 faceFlux, phiP, phiN, gradcP, gradcN, d
78 );
79
80 return max(min(min(2*r, 0.5*r + 0.5), 2), 0);

MC.H
76 scalar r = LimiterFunc::r
77 (
78 faceFlux, phiP, phiN, gradcP, gradcN, d
79 );
80
81 return max(min(min(2*r, 0.5*(1 + r)), 2), 0);

Another question:
Now most of the openFOAM's high resolution schemes are based on TVD.
Many famous NVD schemes such as SMART are not implemented in the openFOAM. What is the reason? Is the implementation of NVD schemes is more difficult than that of TVD schemes?