U.S.-France Cooperative Research: Turbulence Modelling and Validation

美法合作研究：湍流建模和验证

• 批准号: 9015984
• 负责人: Budugur Lakshminarayana
• 金额: $ 1.25万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015984&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Turbulence

The award will support collaborative research between Dr. B. Lakshminarayana, Department of Aerospace Engineering, Pennsylvania State University, and Professor Francis Leboeuf, Fluid Mechanics and Acoustics Laboratory, Ecole Centrale de Lyon, France. The objective of this project is to develop and validate models for turbulence. The flow phenomena in turbines is extremely complex. It is three dimensional, turbulent and unsteady, with substantial influence of rotation, curvature and heat transfer effects. Attempts to predict this flow have not been successful due to inadequate turbulence models. The inability of the Navier- Stokes codes to capture the physical phenomena in turbines and pumps has hampered improvements in design and analytical procedures for the development of high performance turbo- machinery. The aim of this cooperative research effort is to develop turbulence models that incorporate the effects of rotation, curvature, compressibility, three dimensionality and heat transfer. The turbulence transport equation (based on density averaging) and velocity-density covariance transport equations will be modelled to derive algebraic stress transport and Algebraic heat flux equations respectively. These equations, coupled with the turbulent kinetic energy and the dissipation equations, and mean momentum equations, should provide accurate prediction of flow and heat transfer field in turbines and pumps. A validation experiment is also proposed to check the accuracy of modelling, including evaluation of various terms contributing to the turbulent stress and energy, and turbulent heat flux transport equations. This research will benefit from the extensive and complementary expertise of the US and French investigators in turbulence modeling of turbomachinery.

该奖项将支持B博士之间的合作研究。 Lakshminarayana，航空航天工程系， 宾夕法尼亚州立大学，以及弗朗西斯勒伯夫教授， 法国国立中央理工学院流体力学与声学实验室 法国里昂。 该项目的目标是开发 验证湍流模型 水轮机内的流动现象极其复杂。 是 三维、湍流和非定常， 旋转、曲率和传热效果的影响。 预测这种流动的尝试没有成功， 湍流模型不足。 海军的无能- Stokes代码捕捉涡轮机中的物理现象 和泵阻碍了设计和分析方面的改进， 开发高性能涡轮增压器的程序， 机械. 这项合作研究的目的是 开发湍流模型，该模型包含以下影响： 旋转，曲率，压缩性，三维 和热传递。 湍流输运方程（基于 密度平均）和速度-密度协方差输运 方程将被建模，以导出代数应力 输运方程和代数热通量方程。 这些方程，加上湍流动能 耗散方程和平均动量方程 应该提供流动和传热准确预测 涡轮机和泵领域。 验证实验也是 建议检查模型的准确性，包括 对影响湍流的各种因素的评估 应力和能量以及湍流热通量输运方程。 本研究将受益于广泛和互补的 美国和法国调查人员在湍流方面的专业知识 模型的建立。