The results show that the external shape of anisotropy diffusion DLA cluster with different S-Q is diamond, the Hausdorff dimension of DLA cluster decreases and the diamond collapses and extends with the increase of S-Q.

• 模拟结果表明:不同S-Q下的DLA集团均具有菱形结构；且随着S-Q的增加；DLA集团渐趋扁长；维数逐渐降低.