Equipment Related to the Study of Interaction Between Homogeneous Turbulence and Solid Particles

均匀湍流与固体颗粒相互作用研究相关设备

• 批准号: 9208350
• 负责人: Said Elghobashi
• 金额: $ 7万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9208350&HistoricalAwards=false
• 关键词: Equipment; Related; Study; Interaction; Between

A two-component Laser Doppler Velocimeter (LDV) is acquired for a combined experimental and numerical study to enhance the basic understanding of the physics of two-way coupling between small spherical particles and turbulence. The two-way nonlinear coupling between particles and turbulence encompasses the dispersion of discrete particles due to the turbulent motion of the fluid, and the modulation of the turbulence structure by the motion on the particles. The primary goal of the experimental study is to simultaneously measure the instantaneous velocities of the fluid and particles in two directions and at two positions using a specially designed two-component LDV. The results obtained from direct numerical simulation will be compared with the experimental data, and used to test and improve available turbulence closure models of particle-laden flows.

获得了双分量激光多普勒测速仪（LDV） 进行实验和数值研究相结合，以增强 基本理解双向耦合的物理原理， 小的球形颗粒和湍流。 双向 颗粒与湍流的非线性耦合 包括离散颗粒的分散， 流体的湍流运动，以及 湍流结构是由粒子的运动引起的。 的 实验研究的主要目标是同时 测量流体的瞬时速度， 粒子在两个方向和两个位置使用一个 专门设计的双组分LDV。 从直接数值模拟得到的结果将 与实验数据进行比较，并用于测试和 改进含颗粒湍流封闭模型 流动。