U.S.-France Cooperative Research: Stagnation Flow Stabilized Premixed Turbulent Flames

该奖项将支持博士之间的合作研究。 Robert K.劳伦斯伯克利实验室的程 加州大学伯克利分校和I.哥卡尔普 燃烧化学和环境研究中心 法国奥尔良CNRS的高级温度（CRCCHT）。 的 工作将集中在调查的基本 稳定在滞止状态下的预混湍流火焰的特性 点流。 这种特殊的火焰结构被认为是 是测试湍流燃烧数值模型的理想选择， 因为它的行为非常接近理想化的 一维火焰 两种不同的火焰 配置将进行研究：在加州，平面 湍流火焰刷由火焰撞击在 平板;在法国，是对置火焰喷射器。 法国和美国集团都采取同样的做法， 用激光研究湍流火焰动力学 诊断以测量详细的统计湍流 参数 拟议中的合作将使 的火焰结构类型，可以使用这些研究 技术. 美国和法国的调查人员一直在 在过去的两年里， 合作已经产生了两份联合出版物。 这笔赠款提供的旅费支助将促进 继续这项工作，这具有重要的实际意义 在设计高效率的设备，如 如燃气或燃油燃烧器，它们利用火焰。

This award will support collaborative research between Dr. Robert K. Cheng of the Lawrence Berkeley Laboratory of the University of California, Berkeley, and Dr. I. Gokalp of the Centre de Recherches sur la Chimie de la Combustion et des Hautes Temperatures (CRCCHT) of CNRS, in Orleans, France. The work will focus on an investigation of the fundamental properties of premixed turbulent flames stabilized in stagnation point flows. This particular flame configuration is considered ideal for testing numerical models of turbulent combustion, because its behavior closely approximates that of an idealized one-dimensional flame. Two different types of flame configurations will be studied: in California, the planar turbulent flame brush formed by the impinging of a flame on a flat plate; and in France, opposing flame jets. Both the French and American groups share the same approach to the study of turbulent flame dynamics, employing laser diagnostics to measure detailed statistical turbulence parameters. The proposed collaboration will multiply the number of types of flame configurations that can be studied using these techniques. The U.S. and French investigators have been collaborating informally for the last two years, and this collaboration has already resulted in two joint publications. Travel support provided by this grant will facilitate the continuation of this work, which has important practical ramifications in the design of high-efficiency apparatus, such as gas or oil burners, which utilize flames.