supported by the Research Project Supported of Shanxi Scholarship Council of China(2021-029);Shanxi Provincial International Cooperation Base and Platform Project(202104041101019);Shanxi Province Natural Science Research (202203021211129)。
The second-order backward differential formula(BDF2)and the scalar auxiliary variable(SAV)approach are applied to con‐struct the linearly energy stable numerical scheme with the variable time steps for the epitaxial ...