Experimental investigation of flow fields in the interstices of bulk particles with ray tracing based reconstruction (A01)

基于射线追踪重建的散装颗粒间隙流场实验研究（A01）

• 批准号: 447157929
• 金额: --
• 依托单位: Institut für Simulation und Graphik
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/447157929?language=en
• 关键词: Experimental; investigation; flow; fields; interstices

A1 examines the flow field in granular assemblies of spherical particles. The challenge of the project is to measure velocities of the gas phase directly based on Particle Image Velocimetry. For this, PIV is combined with ray tracing simulations, which is a novel approach for measurements in dense bulk solids. The ray tracing simulation enables the separation of the contributions of the different light beam paths to the recorded image, which allows to correct the PIV-images of the flow. The high sensitivity of the method to a precise correspondence between the experimental setup and the simulation will be addressed. With this approach, the project provides direct measurements of mean and fluctuating velocity fields in granular assemblies.

A1检查球形颗粒的颗粒集合体中的流场。该项目的挑战是基于粒子图像测速技术直接测量气相的速度。为此，PIV与光线跟踪模拟相结合，这是一种用于测量致密散装固体的新方法。光线跟踪模拟能够分离不同光束路径对记录图像的贡献，这允许校正流的PIV图像。高灵敏度的方法之间的精确对应的实验装置和模拟将得到解决。通过这种方法，该项目提供了直接测量的平均和波动的速度场在颗粒组件。