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

在充分发展的槽道流动中，将进行实验和数值相结合的研究，以探索分散固体颗粒与气相湍流的相互作用。颗粒将均匀分散在上游位置，定量测量将使用单组分LDA系统。这些将由平板照明的流动可视化来补充。计算将通过直接数值模拟(DNS)进行。在对混合层的早期研究之后，一个特别的重点将是阐明流体相和颗粒相中的优先组织结构，以及这些结构之间的关系。这些信息对于最终建立可靠地预测两相流特性的模型是必不可少的。

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.