Density rendering of the subsonic blob test (∆ρ = 100, M = 0.5 R_cloud = 0.1) at t = 5t_crush with a resolution of n_x = 64 in the low density medium. The three left columns depict the cloud state with the ISPH method and the kernels (O_I,64, C₂, C₄), and three right columns show the GDSPH method and the kernels (O₆₄, C₂, C₄). The X axis has a length of one, and Y axis has a length of three. One can see that the ISPH method disrupts and mixes the cloud more aggressively than the GDSPH method. We also observed that we increase mixing with the optimized kernels compared to the C₂ and C₄ kernel in both the GDSPH and ISPH method.