Network: Wave-flow interactions

网络：波流相互作用

• 批准号: EP/F029306/1
• 负责人: Jacques Vanneste
• 金额: $ 7.59万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF029306%2F1
• 关键词: Network; Wave; flow; interactions

The dynamics of the fluids encountered in many environmental and industrial applications is a complicated mixture of flow motion and wave propagation. Flows and waves can interact in a variety of ways: flows can generate waves, as the familiar example of turbulence-generated noise demonstrates, but waves also generate flow motion, as in the case of along-shore currents forced by sea-surface waves. Understanding the nature of the interaction between flows and waves is a problem of central importance in fluid dynamics, with a broad range of applications. It is also a very difficult problem: for a start, the very definition of what is a wave in a moving fluid is not straighforward. Research on wave-flow interactions is currently buoyant in the UK: several groups work on different aspects of the problem, especially in the context of geophysical flows. They consider different types of flows and waves and use different techniques (analytical, numerical, experimental). However, there are many commonalities in the mathematical models underlying the problems these groups study, and it would be highly beneficial if collaborations between the groups could be initiated. This is the aim of the proposed Network. Through yearly meetings and small-scale workshops, it will stimulate interactions between researchers with complementary expertises, so that current challenges can be tackled efficiently.Four problems have been identified to start collaborative work. A first is the separation between waves and flow. Here what will be sought are both suitable mathematical definitions and practical means of identifying which components of fluid motion can be regarded as flow and as waves. A second problem concerns the spontaneous generation of waves by flow. This remains largely open when situations more complex than that of non-dispersive waves are considered. A third problem is the generation of robust mean flows by waves, of the type that controls some part of the atmospheric circulation. The challenge here will be to go beyong the current theory, often limited to symmetric mean flows, and to model both dissipative and non-dissipative interactions. A fourth problem is that of the interaction between surface waves and ocean currents, with applications to the modelling of freak waves and tsunami-wave propagation. These four problems with be complemented by others which will emerge from the interactions of the Network members.

在许多环境和工业应用中遇到的流体动力学是流动运动和波传播的复杂混合物。流和波浪可以以多种方式相互作用：流可以产生波浪，正如我们熟悉的湍流产生噪声的例子所证明的那样，但波浪也会产生流动运动，就像海面波浪迫使沿岸流流动的情况一样。了解流与波之间相互作用的本质是流体动力学中的一个核心问题，具有广泛的应用。这也是一个非常困难的问题：首先，运动流体中的波的定义并不简单。目前，关于波流相互作用的研究在英国蓬勃发展：几个小组致力于解决该问题的不同方面，特别是在地球物理流的背景下。他们考虑不同类型的流动和波浪，并使用不同的技术（分析、数值、实验）。然而，这些小组研究的问题背后的数学模型有许多共性，如果能够启动小组之间的合作，那将是非常有益的。这是拟议网络的目标。通过每年一次的会议和小型研讨会，它将促进具有互补专业知识的研究人员之间的互动，从而有效地应对当前的挑战。已经确定了四个问题来启动协作工作。首先是波与流之间的分离。这里要寻求的是合适的数学定义和识别流体运动的哪些分量可以被视为流和波的实用方法。第二个问题涉及流动自发产生波。当考虑比非色散波更复杂的情况时，这在很大程度上仍然是开放的。第三个问题是通过波浪产生强大的平均流量，这种类型控制着大气环流的某些部分。这里的挑战将是超越当前的理论（通常仅限于对称平均流），并对耗散和非耗散相互作用进行建模。第四个问题是表面波和洋流之间的相互作用，及其在异常波和海啸波传播建模中的应用。这四个问题可以通过网络成员的互动中出现的其他问题来补充。

项目成果

Variational water-wave model with accurate dispersion and vertical vorticity

具有精确频散和垂直涡度的变分水波模型

• DOI: http://dx.10.1007/s10665-009-9346-3
• 发表时间: 2009
• 期刊: Journal of Engineering Mathematics
• 影响因子: 1.3
• 作者: Cotter C

Balance and Spontaneous Wave Generation in Geophysical Flows

地球物理流中的平衡和自发波产生

• DOI: 10.1146/annurev-fluid-011212-140730
• 发表时间: 2013-01-03
• 期刊: Annual Review of Fluid Mechanics
• 影响因子: 27.7
• 作者: J. Vanneste

Rossby waves and zonons in zonostrophic turbulence

环带湍流中的罗斯贝波和带子

• DOI: http://dx.10.1063/1.3701355
• 发表时间: 2012
• 作者: Sukoriansky S

Streaming by leaky surface acoustic waves

通过泄漏表面声波进行流传输

• DOI: 10.1098/rspa.2010.0457
• 发表时间: 2011-06-08
• 期刊: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
• 作者: J. Vanneste;O. Bühler
• 通讯作者: O. Bühler

Feedback of zonal flows on wave turbulence driven by small-scale instability in the Charney-Hasegawa-Mima model

查尼-长谷川-美马模型中小尺度不稳定性驱动的波湍流中纬向流的反馈

• DOI: http://dx.10.1209/0295-5075/96/25001
• 发表时间: 2011
• 期刊: EPL (Europhysics Letters)
• 作者: Connaughton C