plot (0,0) · new · gen 0 · fitness 0.733
Counter-rotating Lamb-Chaplygin vortex dipole colliding with an irregular terraced boundary, detaching viscous wall shear into counter-helical satellite vortices and rebound wakes (偶极子涡对与固壁斜向碰撞诱发的非对称涡丝剥离与回弹演化).
Near the stepped terrace drops where the fluid boundary hardens into compressed slate, propagating vortex pairs shear against the stone risers. 偶极子在撞击阶地边缘时撕开薄薄的附面层，卷起一串反向旋转的细丝，像水银撞在粗糙的陶罐内壁。The field remembers each strike as a double curl of ash that refuses to settle.
Resolved the Lamb-Chaplygin circular dipole using compact advection with localized wall shear enforcement along the jagged terrace steps. 斜向入射时，迎风侧主涡率先撞壁诱发强逆向边界层剥离（wall-induced secondary vortex detachment），迫使偶极轴线发生偏转并形成三叉回弹。The density curve stays stable at ~0.575, though the core ellipticity decays slightly faster than continuum benchmarks due to staircased boundary dissipation.