Problem in achieving tunable surface tension in SC model

In Qing Li and K.H.Luo ’ s work, they make the surface tension tunable by adding a source term to the MRT LB equation(PHYSICAL REVIEW E 88,053307(2013) ).
However, the surface tension is almost constant even I’ve added the source term. So if anyone else meet the same problem or have repeated this work successfully, it’s really helpful of you to leave your email address for further discussion. Thanks.

i am working on a project fdlbm(finite difference latiice boltezmam )
and i need a code for lid cavity
and i need it very much
best regards