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主要研究机构：迪特马大学研究机构：伊利诺伊理工学院近壁湍流与剪切应力耦合的柔顺表面之间的相互作用研究将使用分析和直接数值模拟方法，对壁面产生的湍流与复杂柔顺表面之间的相互作用进行研究。这种互动是否可能的问题是一个长期存在的问题，至今尚未解决。 主要目标之一是实现设计顺应性壁的能力，其可以最佳地减少湍流声音产生和湍流阻力。 主要目标之一是更好地了解在这种情况下工作的动态机制。最终，这种理解将用于操纵湍流，使得其某些特性以期望的方式改变。 目标是减少由这种边界层产生的湍流阻力，并衰减由湍流产生的噪声。如果所提出的柔性壁的设计可以成功地减少湍流阻力，这些发现将促进用于提高大量技术系统的效率的经济上有吸引力的方法。 最有希望的候选者将是依赖于稠密流体（如水、石油或其他液体）的湍流或受其影响的设备。 它可以实现船舶和潜艇的大幅减阻，也可以减少管道中的压力损失。此外，研究生将在湍流研究和湍流数值模拟领域接受培训，并将能够将在此过程中获得的知识应用于各种技术应用。