Front Propagation and Coiling Instabilities of Filamentary Gravitational Plumes

摘要CTS-0079725 R。流体运动的不稳定性是流体动力学中一个重要的分支。 PI已经提议研究一类新的不稳定性：那些发生在主体流体的大体积内的正浮力或负浮力流体的窄羽流中的不稳定性。 与浮力相关的密度梯度允许纹影观测羽流的行为，这种技术将被用来检查螺旋（或手征）和轴对称不稳定性。 这些实验将与用于建立将导致基本状态崩溃的参数的理论考虑相关联。

AbstractCTS-0079725R. Goldstein, University of ArizonaInstabilities of fluid motions represent a large and a fundamentally important branch of fluid dynamics. The PI has proposed to investigate a novel class of instabilities: those which occur in the narrow plumes of positively-or-negatively-buoyant fluid within a large body of the host fluid. The density gradients associated with the buoyancy permit schlieren observations of the plume behavior and this technique will be used to examine the coiling (or chiral) and the axisymmetric instabilities. These experiments will be correlated with theoretical considerations that are used to establish the parameters that will lead to the breakdown of the basic state.