High-Speed Irregular Particle Flow Diagnostic System

高速不规则颗粒流诊断系统

• 批准号: 408308656
• 金额: --
• 依托单位: Otto-von-Guericke-Universität Magdeburg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/408308656?language=en
• 关键词: Speed; Irregular; Particle; Flow; Diagnostic

The requested system „High­Speed Irregular Particle Flow Diagnostics System“ will enable to determine the complete, three­dimensional behaviour of irregularly shaped particles in turbulent flows. Knowledge of the dynamics of particles in flows has a great importance for the successful design and determining the optimum operating conditions of numerous industrial applications, e.g. pneumatic transport, cyclone separators, fluidised beds, dust collectors, and pulverised­coal combustors to name a few. So far, the majority of studies involving gas­particle flows assume that particles are perfect spheres. This assumption is very convenient, but in most cases unrealistic. Predicting the motion of general non­spherical particles is a non-trivial task that is exacerbated by the discrete temporal and strongly non-linear nature of non­spherical particles and the complex nature of the interaction with the fluid phase. Hence, there are a very few theoretical studies on the behaviour of non­spherical particles. The applicant (Prof. B. van Wachem) has pioneered research work on the behaviour of irregularly shaped particles in complex and realistic situations. There are currently no experimental studies elucidating the three­dimensional behaviour of non­spherical particles in flows. The requested system will be the first in its kind and will be used to: a) validate the theoretical frameworks, b) gain new insights in the behaviour of irregularly shaped particles in fluid flow, and c) study other multiphase systems, such as falling liquid films. The system will be part of a highly equipped and modern laboratory at OVGU in Magdeburg.

所要求的系统“高速不规则颗粒流诊断系统”将能够确定湍流中不规则形状颗粒的完整三维行为。流动中颗粒动力学的知识对于许多工业应用的成功设计和确定最佳操作条件具有重要意义，例如气动输送、旋风分离器、流化床、除尘器和粉煤燃烧器。到目前为止，大多数涉及气固两相流的研究都假设颗粒是完美的球体。这个假设非常方便，但在大多数情况下是不现实的。预测一般非球形粒子的运动是一项重要的任务，非球形粒子的离散时间和强非线性性质以及与流体相相互作用的复杂性质加剧了这一任务。因此，很少有理论研究的行为，非球形粒子。申请人（B教授）货车Wachem）是研究复杂和现实情况下不规则形状颗粒行为的先驱。目前还没有实验研究阐明非球形颗粒在流动中的三维行为。所要求的系统将是同类中的第一个，并将用于：a）验证理论框架，B）获得流体流动中不规则形状颗粒行为的新见解，以及c）研究其他多相系统，如下降液膜。该系统将成为马格德堡OVGU一个装备精良的现代化实验室的一部分。