컨텐츠 시작
학술대회/행사
초록검색
| 제출번호(No.) | 0199 |
|---|---|
| 분류(Section) | Invited Lecture |
| 분과(Session) | (AN) Analysis (AN) |
| 발표시간(Time) | 19th-O-14:40 -- 15:20 |
| 영문제목 (Title(Eng.)) |
Large increase in vorticity maximum for some 3D axisymmetric flows |
| 저자(Author(s)) |
Kyudong Choi1, In-Jee Jeong2 UNIST1, Seoul National University2 |
| 초록본문(Abstract) | We consider axisymmetric incompressible inviscid flows without swirl. When the axial vorticity is non-positive in the upper half space and odd in the last coordinate, we call the flow anti-parallel and we may expect a head-on collision of anti-parallel vortex rings. By establishing monotonicity and infinite growth of the vorticity impulse on the upper half-space, we obtain infinite growth of vorticity maximum at infinite time for certain classical vorticity. On the other hand, a finite but faster growth for some smooth vorticity is obtained thanks to the stability of Hill's vortex. |
| 분류기호 (MSC number(s)) |
76B47, 35Q35 |
| 키워드(Keyword(s)) | Vorticity, axisymmetric flow, anti-parallel, Hill's spherical vortex |
| 강연 형태 (Language of Session (Talk)) |
Korean |