Exact, infinite energy, blow-up solutions of the three-dimensional Euler equations

被引:28
|
作者
Gibbon, JD [1 ]
Moore, DR [1 ]
Stuart, JT [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Math, London SW7 2AZ, England
关键词
D O I
10.1088/0951-7715/16/5/315
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
For the class of cylindrically symmetric velocity fields U(r, z, t) = {u(r, t), v(r, t), zgamma(r, t)}, two infinite energy exact solutions of the three-dimensional incompressible Euler equations are exhibited that blow up at every point in space in finite time. The first solution is embedded within the second as a special case and in both cases upsilon = 0. Both solutions represent three-dimensional vortices which take the form of hollow cylinders for which the vorticity vector is omega = (0, omega(theta), 0). An analysis on characteristics shows how more general solutions can be constructed and analysed.
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页码:1823 / 1831
页数:9
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