SGER: Interaction between Near-Wall Turbulent Flows and Compliant Surfaces with Shear-Stress Coupling

SGER：近壁湍流与具有剪应力耦合的柔顺表面之间的相互作用

• 批准号: 0330320
• 负责人: Dietmar Rempfer
• 金额: $ 4.67万
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0330320&HistoricalAwards=false
• 关键词: SGER; Interaction; between; Near; Wall

PROPOSAL NO.: CTS-0330320PRINCIPAL INVESTIGATORS: DIETMAR REMPFERINSTITUTION: ILLINOIS INSTITUTE OF TECHNOLOGY INTERACTION BETWEEN NEAR-WALL TURBULENT FLOWS AND COMPLIANT SURFACES WITH SHEAR-STRESS COUPLINGResearch will be conducted concerning the interaction between wall-generated turbulence and complex compliant surfaces using analysis and direct numerical simulation. The question of whether such interactions are possible is a long-standing and as of yet unresolved issue. One of the main goals is to achieve the ability to design compliant walls that can optimally reduce turbulent sound production and turbulent drag. One of the main objectives is an improved understanding of the dynamical mechanisms at work in such a situation. Ultimately, this understanding then will be used to manipulate the turbulent flow such that some of its characteristics are altered in a desirable way. The goals are to reduce the turbulent drag generated by such boundary layers, and also to attenuate the noise that is generated by the turbulent flow.If the design of a compliant wall as proposed can successfully reduce turbulent drag, these findings will facilitate economically attractive methods for improving the efficiency of a large number of technical systems. The most promising candidates would be devices that depend on or are affected by turbulent flow of dense fluids, like water, petroleum, or other liquids. It could be possible to achieve substantial drag reduction for ships and submarines, and it may also be possible to reduce pressure losses in pipelines. In addition, a graduate student will be trained in the field of turbulent research and numerical simulation of turbulent flows, and who will be able to apply the knowledge gained in the process to a wide variety of applications in technology.

提案编号：CTS-0330320 PRICCIPAL调查人员：Dietmar Rempferinstitution：伊利诺伊州技术研究所之间的近壁动荡流和合规表面之间的互动之间的相互作用将通过剪切压力couplingresearch进行，以使用分析和直接仿真进行壁之间的相互作用，以实现壁之间的互动和复杂的编号模拟表面之间的相互作用。这种互动是否可能是一个长期存在的问题，而且尚未解决。 主要目标之一是实现设计合规墙的能力，可以最佳地减少动荡的声音产生和动荡的阻力。 主要目标之一是在这种情况下对工作中的动态机制的了解得到了改进。最终，这种理解将被用来操纵湍流，以使其某些特征以理想的方式改变。 目标是减少这种边界层产生的湍流阻力，并减轻湍流流量产生的噪声。如果按照拟议中的建议的设计可以成功减少湍流阻力，那么这些发现将有助于提高经济上有吸引力的方法，以提高大量技术系统的效率。 最有希望的候选者是依赖或受湍流（如水，石油或其他液体）湍流的设备。 有可能为船舶和潜艇实现大量的拖放量，并且也有可能降低管道中的压力损失。此外，研究生将在动荡的研究和数值模拟领域接受培训，并能够将过程中获得的知识应用于技术的各种应用。