Collapsing-caviton turbulence in one dimension.
Collapsing-caviton turbulence in one dimension.
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DOI：
10.1103/physrevlett.56.838
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发表时间：
1986-02
影响因子：
8.6
通讯作者：
Russell;Dubois;Rose
中科院分区：
文献类型：
--
作者：
Russell;Dubois;Rose
通过研究一组非线性方程组的解，在一维空间内检验了基于自相似塌陷空穴的强朗缪尔湍流统计理论，其中包括作为特例的Zakharov方程。在特定初始条件下，用数值方法验证了具有预测自相似坍塌的单空泡解。多空穴系统的研究历经了许多代的崩塌。由于小尺度成核，长时间平均谱不包含理论所预测的幂函数惯性区。
A statistical theory of strong Langmuir turbulence based on self-similarly collapsing cavitons is tested in one spatial dimension by study of the solutions of a set of nonlinear equations which includes, as a special case, the Zakharov equations. Single-caviton solutions exhibiting predicted self-similar collapse are verified numerically for special initial conditions. Multiple-caviton systems are studied over many generations of collapse. Long-time--averaged spectra do not contain the power-law inertial regime predicted by the theory because of nucleation at small scales.