The Interaction between Turbulence and Dispersed Particles in Fully Developed Channel Flow

充分发展的通道流中湍流与分散粒子之间的相互作用

• 批准号: 9005998
• 负责人: John Eaton
• 金额: $ 25.46万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9005998&HistoricalAwards=false
• 关键词: Interaction; between; Turbulence; Dispersed; Particles

A combined experimental and numerical study will be carried out to explore the interaction of dispersed solid particles with gas-phase turbulence in fully developed channel flow. Particles will be dispersed uniformly at an upstream location, and quantitative measurements will be with a single component LDA system. These will be complemented by sheet-illuminated flow visualization. The computation will be by direct numerical simulation (DNS). Following an earlier investigation of mixing layers, a particular focus will be on the elucidation of preferred organized structures both in the fluid phase and the particulate phase, and the relation between these structures. Such information is essential for the ultimate construction of models to predict reliably the characteristics of two-phase flows.

通过实验与数值相结合的研究，探索在完全发育的通道流动中，分散的固体颗粒与气相湍流的相互作用。颗粒将在上游位置均匀分散，定量测量将采用单组分LDA系统。这些将由板照明流可视化补充。计算将采用直接数值模拟（DNS）。在先前对混合层的研究之后，将特别着重于阐明流体相和颗粒相中优选的有组织结构，以及这些结构之间的关系。这些信息对于最终构建可靠预测两相流特性的模型至关重要。